Ireland's comeback efforts proved fruitless as France held their own to claim a 30-24 win in an enthralling Six Nations tussle on Saturday.

Heading to the Stade de France without injured captain Jonny Sexton, Ireland endured a tough start – including Antoine Dupont scoring the fastest try they have conceded in the Six Nations – and Melvyn Jaminet's kicking kept them at arm's length in the first half.

Josh van der Flier and Jamison Gibson-Park led an Ireland rally early in the second, but Cyril Baille's try saw France regain their composure.

Although that might have been followed by another score in a frantic finish, when TMO intervened, Les Bleus did just enough to hold on to their lead.

Ireland had been swiftly into the lead against Wales last time out but were on the wrong end of a fast start in Paris, as Dupont latched onto an offload with just over a minute played.

Jaminet added the extras and then another three French points from the tee soon after, but Ireland hit back when Sexton's replacement Joey Carbery hung the restart kick up for Mack Hansen to pounce and go over.

Another Jaminet penalty nosed France into a six-point lead, before two more pieces of Dupont brilliance resulted in two more successfully converted kicks before half-time.

Jaminet's penalty proficiency continued with a long-range effort early in the second half, yet the momentum quickly swung Ireland's way when Van der Flier forced his way over in the corner following a successful line-out.

The gap was down to a point by the 49th minute, Gibson-Park grounding underneath the sticks, but Ireland were their own worst enemies four minutes later – an error in the ruck allowing France to capitalise through Baille.

Although Ireland were handed more hope when Carbery chipped through a 30-yard penalty, France pushed back and Jaminet sent a penalty through the sticks to seal victory having failed to ground what seemed set to be a decisive try.

Super Bowl LVI will be a tale of the student versus the master with Cincinnati Bengals head coach Zac Taylor going against the man he used to work for on the Los Angeles Rams' staff in Sean McVay. They have not worked together since the 2018 season and their two offenses have taken somewhat divergent paths since that point, but the meeting between a coach schooled in the McVay offense and the man whom he learned it from is a fascinating subplot of the NFL's grand season finale.

When two coaches have a strong knowledge of each other and are born of the same scheme, how do they go about manufacturing an edge?

"It becomes a little bit of a game of chess," former NFL wide receiver Andrew Hawkins told Stats Perform.

"Typically I give the upper hand to the Mr Miyagi of the two because you can teach a system, you can put somebody in the system, the longer you're in that system, the more you know, 'I've taught you this so I know how you're gonna approach something because I taught you to do it, I know how to break your own rules', and there will be some gamesmanship and some of the Kyle Shanahan-McVay elements here with McVay and Taylor.

"Ultimately it'll come down to players making plays."

Two of the biggest playmakers in Super Bowl LVI will spend a lot of time face to face, with Offensive Rookie of the Year Ja'Marr Chase set to line up against arguably the NFL's elite cornerback in Rams superstar Jalen Ramsey.

Chase, just as he was in college, has been the go-to receiver for Bengals quarterback Joe Burrow, and it could be the level of success Ramsey enjoys in severing their connection that decides who lifts the Lombardi Trophy.

Cincinnati's vindication

The Bengals may continue to have offensive line problems, but at this point few are still questioning their decision to eschew addressing them and select Chase instead.

In terms of individual awards, the most emphatic vindication has already been secured, with Chase taking home the hardware at Thursday's NFL Honours ceremony.

A decisive performance from Chase would end any debate, and the numbers illustrate the task on Ramsey's hands in attempting to stop him.

Chase's 2021 burn rate, which measures how often a receiver wins his matchup with a defender when he is targeted, of 64.3 per cent was just above the NFL average of 62 for wideouts with at least 100 targets.

However, when he has won his matchup, Chase has done so decisively. His burn yards per target average of 13.85 stands below only that of Tyler Lockett (14.72), with his tally of 3.2 burn yards per route good for tied seventh among wideouts.

And when it comes to making big plays, only three receivers have fared better in the 2021 campaign, Chase producing a big play – a 20-yard burn or a burn for a touchdown – on 36.6 per cent of his targets.

No quarterback had as many passing plays of 50 yards in the regular season as Burrow (12) and no wideout had as many receiving plays of that distance as Chase's six.

Chase is not one of the league's elite separators but, when he does get even the slightest step on a defender, the results can be devastating.

In Ramsey, however, he is facing a defender with the ability to lock down receivers for an entire game.

A strength on strength matchup

Team-mate Aaron Donald might feel aggrieved at not winning Defensive Player of the Year on Thursday, but Ramsey also had quite a compelling statistical case and could be considered a snub.

Among cornerbacks with at least 100 matchups with a receiver, only two defenders had a better combined open percentage allowed across both man and zone coverage than Ramsey in the regular season.

His combined open percentage of 17.07 trailed just Bryce Hall (14.61) and Casey Hayward (14.83), with burns for significant yardage rarely something Ramsey gives up.

For cornerbacks with a minimum of 50 targets, Ramsey is top 10 in 2021 in burn yards per target (8.12, sixth) and burn yards per snap (1.39, 10th).

But where does Ramsey excel the most? Preventing the big play.

Indeed, his 2021 big-play rate of 14.2 per cent can only claim to have been topped by Avonte Maddox and Tre'Davious White (both 13.9). Maddox started only five games while White's season was cut short in his 11th by a knee injury.

When Chase lines up against Ramsey, it will be a case of strength on strength, but neither appears to be spending too much time worrying about how to combat the other.

"He's got to check me"

Asked about Chase, Ramsey replied: "I respect his game, I respect how he's played this year, he's come in as a rookie and tore the league up, he has great chemistry with his quarterback and you can tell.

"I'll let the world keep talking about it [the matchup]. We're going to get out there on Sunday; I'll be ready to play, I'm sure he will be too."

Chase undoubtedly appeared ready for the challenge when speaking to the media on Friday, hinting that Ramsey will have the tougher task playing the reactionary role on defense.

"I'm just gonna play my game, he the one gotta check me," said Chase. 

"I'm not playing defense, I'm playing offense, so he got to check me. We're going to go with our matchups and go as we go."

From the evidence of their respective stunning seasons, those matchups may well command the greatest attention when two of the stars of 2021 face off under one of sport's brightest spotlights.

Wales hooker Ryan Elias hailed his side's "never-say-die attitude" in their tense 20-17 victory over Scotland at the Principality Stadium on Saturday.

After suffering a heavy loss to Ireland last weekend, Wales gave their Six Nations title defence lift-off thanks to the kicking expertise of Dan Biggar.

The fly-half kicked 15 points on what was his 100th Test outing, including a drop-goal 11 minutes from time to seal the victory for Wales in Cardiff.

Scotland were a man down at that point after Finn Russell, who himself kicked 12 points, was yellow carded for a deliberate knock-on.

Wales trailed by five points in the first half and were again behind approaching the hour mark, but they rallied to avoid successive losses to begin a campaign for the first time since 2007.

"It's huge," Elias told BBC Sport. "We needed a big reaction from last week, especially for the crowd here today.

"We didn't turn up last week physically or in a lot of aspects of the game. I don't think we fired any shots last week.

"We had a long hard look at ourselves in the week. We were physical, we had that never-say-die attitude. Hopefully we can just keep building on that now."

Russell's yellow card was his fourth in Test rugby, each of those coming in the Six Nations – including one in a defeat to Wales seven years ago.

Biggar took full advantage by kicking for the three points soon after, rather than playing the ball out wide as Wales closed in on the try-line.

After expertly seeing out the win, however, centurion Biggar was left to reflect on a memorable day.

"This is one of my best victories in a Welsh shirt," he said. "It's been a really difficult week. We've had to put up with a lot of flak – and rightly so. 

"To come back here and put on a show like that, to grind a result out like that, is one of the best victories in my 100 games.

"We put in a huge shift defensively, our forwards fronted up, and it laid a really strong foundation.

"Off the back of the week we've had, this team has shown if anything it's resilient and can hit back after a poor performance."

Scotland beat England 20-17 in last week's Calcutta Cup clash and started strongly through a Darcy Graham try in Cardiff.

But after failing to push on, they have now lost 10 of their 12 away matches against Wales in the Six Nations, including the last nine in a row at the Principality Stadium.

And Scotland skipper Stuart Hogg was left to reflect on an ill-disciplined display from his side in the Welsh capital.

"We're bitterly disappointed," he told BBC Sport. "The stuff that we're in control of, when we're on the front foot, we're really dangerous. At times, we weren't allowed to do that.

"We're a lot better than what we showed. That’s international rugby – you have to take your chances or you end up on the wrong side of the scoreline.

"[Poor discipline] was absolutely a factor. One penalty or knock-on is fine, but when we compound error upon error that's frustrating, because we know we're better than that.

"Credit to Wales, they were fairly good at times. It's a horrible feeling right now but that is Test match rugby."

Dan Biggar's drop goal on his 100th Test appearance gave Wales' Six Nations title defence lift-off as they battled to a 20-17 victory over Scotland at the Principality Stadium on Saturday.

Wayne Pivac's side were thrashed 29-7 by Ireland in their opener but dug deep to edge out Scotland, who were seeking back-to-back wins after beating England last week.

Darcy Graham and Tom Francis crossed over in a first half that ended level and it remained all square at 17-17 late on as Biggar and Finn Russell kicked four penalties apiece.

A big moment arrived 12 minutes from time when Russell was sin-binned for a deliberate knock-on and, while Wales could not add another try, Biggar's boot two minutes later proved decisive.

Biggar punished slow-starting Scotland by kicking over a couple of early penalties, but the visitors soon got going and scored the first try with 11 minutes played.

Graham outmuscled Louis Rees-Zammit to ground the ball in the corner after collecting a looping pass from Russell towards the right.

Russell was unable to add the extras but slotted over three penalties, either side of one from Biggar, to give Scotland a five-point advantage.

But the hosts were on level terms at half-time thanks to just a second try in Welsh colours for Francis, who grounded after his side drove to the line from the line-out.

Russell and Biggar continued their kicking battle in the second half to ensure the sides remained all square heading into a tense finale.

Alex Cuthbert had a try ruled out for being in touch but referee Nic Berry and TMO adjudged that Russell was not in a position to catch the ball in the build-up when knocking on.

Russell was subsequently yellow-carded and Wales ramped up the pressure, culminating in Biggar slotting over a three-pointer, rather than going for the line, which proved the right call as Wales held on for victory.

Aaron Rodgers' position as the NFL's premier quarterback was reaffirmed on Thursday when he was named MVP, but could Sunday be the start of Joe Burrow's journey to surpassing him?

The Los Angeles Rams may be in Burrow's immediate sights as he and the Cincinnati Bengals look to pull off the upset in Super Bowl LVI, but long term he is pursuing Rodgers in terms of individual greatness, with this season's MVP award the fourth in the Green Bay Packers star's remarkable career.

"He deserved it, he played great all year," Burrow said when asked about Rodgers on Friday.

"He's been the best player in the league, I don't know if I would say that, [he], Patrick Mahomes and Tom Brady have kind of been battling for that the last five years. I'm chasing Aaron Rodgers to try to be the best, he's been doing it for a long time."

Burrow will equal Rodgers' number of Super Bowl wins should he lead the Bengals to victory over the Rams, Rodgers' career partially defined by frustration in the playoffs since the Packers' triumph in Super Bowl XLV in the 2010 season.

Trying to stop Burrow on Sunday will be a player who may well feel snubbed after missing out on a fourth Defensive Player of the Year award. Aaron Donald did not receive that honour, which instead went to Pittsburgh Steelers star T.J. Watt, despite a season in which he registered a stunt-adjusted pass rush win rate of 63.83 per cent.

That was not only the highest for all defenders with at least 100 one-on-one matchups, it was over 10 percentage points higher than his nearest challenger, Myles Garrett (53.56). 

Donald and his team-mates on the defensive line, including Von Miller and Leonard Floyd, took over the NFC Championship Game against the San Francisco 49ers in the fourth quarter to help the Rams turn a 17-7 deficit into a victory.

So how will Burrow handle the challenge of facing a defensive front led by one of the all-time greats, who could not possibly need more motivation?

Burrow – whose average time to throw from the snap of the ball was 2.58 seconds, faster than the league average of 2.67 seconds (min. 200 attempts) – knows processing quickly will be crucial.

"In my opinion, they're [the Rams' pass rush] the best in the league at what they do, they get a lot of pressure on the quarterback, they get schemed to get a lot of one-on-one matchups," he added.

"So it's going to be partly on me to handle that pressure, get the ball out of my hands quickly and make plays when the opportunities are there."

Chicago Bulls head coach Billy Donovan threw his support behind Zach LaVine after the shooting guard let the Minnesota Timberwolves off lightly.

Facing his old team, LaVine was not at his sharpest and there were post-game suggestions he might be struggling physically.

LaVine, who joined Minnesota in the 2014 draft before moving to the Bulls three years later, managed just 12 points and six assists in almost 37 minutes on court.

Ultimately, it hardly mattered that he fell well short of his season's average of 24.6 points, as the Bulls pulled off a 134-122 win.

They are now 35-21 for the season and will tackle the Oklahoma City Thunder – Donovan's old team – on Saturday.

Coby White scored 22 points, Javonte Green bagged 23 and Nikola Vucevic's 26 points proved important as the Bulls were led by DeMar DeRozan's 35-point game.

It was a fifth successive 30-point game for DeRozan and Donovan saluted his "unbelievable" performance.

After quarters of 27-27, 33-32 and 32-32, the Bulls stretched clear in the fourth, which they took 42-31 to swat away the Timberwolves (29-27).

Asked afterwards about LaVine's condition, Donovan said: "I just think at this time of the year, I don't think anybody's feeling probably great.

"He's had to deal with his knee, he's had to deal with his back. It's a lot right now, and I'm sure he's not quite where he wants to be physically, but I give him a lot of credit, he's going out there and competing and playing and trying to do what he can do to help the team.

"We're going to have to work through this with him a little bit. He's trying to do everything he can to help us."

Donovan said the Bulls would "take his pulse – [see] how's he feeling, what's he going through, what's he experiencing" before finalising plans for Saturday's game.

"Zach's an elite scorer in this league and has been for quite some time," Donovan said, "but if he has a game like that you've got to try to generate good shots.

"It was great to see Javonte and Coby step up and have the offensive nights they had. DeMar's been doing it pretty consistently all year long.

"Zach tried to play the right way. I think the guys are trying to help each other and complement each other, and they're very, very unselfish based on who's going well and who's playing well."

Doc Rivers believes the Philadelphia 76ers have the tools to make a play for an NBA championship after clinching a deal to bring in James Harden.

The Sixers coach saw his team beat the Oklahoma City Thunder 100-87 on Friday night to improve to 33-22 for the season, and they sit fifth in the Eastern Conference.

A stiff test comes on Saturday as they tackle the Cleveland Cavaliers, who sit three places above Philadelphia after winning two more games, and from next week Harden comes into contention once he touches down after departing the Brooklyn Nets.

The Sixers signed up Harden and Paul Millsap this week from the Nets, sending Seth Curry, reserve center Andre Drummond, Ben Simmons and two first-round picks the other way.

Asked whether the trade means his team might now be equipped to mount a serious title challenge, Rivers said: "Yeah, I think so. I mean, I don't know. That's something we will find out. We did it with the belief we do, obviously."

Rivers is looking forward to coaching Harden, the 2018 MVP, despite the 32-year-old only scoring at 22.5 points per game this season, his worst record since posting an average of 16.8 with Oklahoma in the 2011-12 season.

"Obviously, we don’t have him yet, so we have to wait and see. But he's a guy that creates his own shot, creates shots for others," Rivers said. "He's another guy on your team that gets double-teamed, which is really valuable. When you have all that, you like it a lot."

Rivers, now 60, has previously won an NBA title, landing glory with the Boston Celtics 14 years ago.

His hunger for more success on that scale remains unstated, and he said: "Let me repeat this one more time - you and no one else can put no more pressure on myself than I do. It will never happen. I'm in this to win. I've always been in this to win.

"I think the reason we did this deal was so we could step into the fray."

Rivers acknowledged Drummond's part in the multi-player deal came as a surprise to the player.

"Drummond - he never thought he was leaving, but Ben and Seth had a pretty good inkling this could happen," Rivers said.

Joel Embiid had 25 points and 19 rebounds in the Sixers' Friday night win, and he will relish teaming up with Harden.

Simmons had not played for Philadelphia since their playoffs exit at the hands of the Atlanta Hawks last season, and he has finally got his wish to move on.

Embiid took aim at his former teammate as he said: "I honestly don't care. It's unfortunate how everything happened, because you look at the history and we didn't get it done as far as winning in the playoffs, but you look at the history being on the court, what we did in the regular season, we were dominant.

"So it's unfortunate that winning was not the biggest factor.

"It's unfortunate that for him, having his own team and being the star was more of his priorities. But I always thought that everything was great, the fit was great. But unfortunately Ben thought that it wasn't. But we all move on."

France and Ireland face off at the Stade de France on Saturday in a contest that may well determine exactly where the Six Nations title ends up next month.

Pre-tournament favourites France kicked off their campaign with a routine victory over Italy, while a much-fancied Ireland proved far too strong for reigning champions Wales.

Both sides picked up bonus points to lead the way at the top, setting up a mouth-watering encounter in the French capital as Ireland aim to stretch their nine-match winning run.

Wales have a chance to respond to last week's disappointment when they host a Scotland side who should be full of confidence following their Calcutta Cup win over England last time out.

The final match of the weekend takes place in Rome as perennial whipping boys Italy take on England with the aim of ending their long-running losing streak in the competition.

Ahead of the second round of fixtures, Stats Perform previews each match with help from Opta.

WALES v SCOTLAND

FORM

Wales have lost just two of their 11 home matches against Scotland in the Six Nations, though one of those losses did come in the last such meeting two years ago at Parc y Scarlets in Llanelli.

The last three encounters between the sides in the competition have been decided by a margin of seven points or fewer. Indeed, four of the last six clashes have seen the side losing at half-time come back to win the match.

Scotland are on their longest away winning streak in the championship, having won four on the spin – not since between 1925 and 1927 have they won five in a row on their travels. However, Wales have won nine of their last 11 Six Nations home matches.

ONES TO WATCH

Taine Basham was a rare shining light for Wales in their heavy loss to Ireland, the tournament debutant crossing over late on to prevent his side from losing to nil on a day to forget in Dublin. Basham also made 22 tackles, which is the most of any player on the opening weekend, missing none in the process.

A number of Scotland players impressed in the late win over England, not least Darcy Graham. The diminutive wing set up Ben White for the opening try, won the crucial turnover in injury time and beat six defenders – the most of any player in round one.

FRANCE v IRELAND

FORM

France and Ireland have played each other 100 times previously, with France victorious on 58 occasions, Ireland prevailing 35 times and seven games drawn. In the Six Nations, Les Blues edge the win record 11 to nine from their 22 previous encounters, the other two matches finishing level.

Ireland have lost their last two meetings with France in the competition, having been beaten in just one of the previous eight. Ireland's win rate of 41 per cent against Les Blues in the Six Nations is their lowest against any side.

After recovering to see off Italy last week, France are aiming to win their opening two Six Nations games for the third year in a row, this after managing it just twice in their previous eight campaigns.

ONES TO WATCH

France head coach Fabien Galthie, back involved after missing the Italy match with coronavirus, has put his faith in youth by handing Yoram Moefana his first Six Nations start. The 21-year-old impressed in his cameo role against Italy by playing a part in his side's last two tries.

Ireland will have to make do without injured skipper Johnny Sexton, who passed the 500-point mark in the Six Nations last week, so all eyes will be on Joey Carbery – the only change from the Wales game – at fly-half. The Munster number 10 is tasked with pulling the strings on his first tournament start.

ITALY v ENGLAND

FORM

England are the only side Italy have never managed to beat in the Six Nations, losing all 22 of their previous showdowns. England's 80-23 win in this fixture 21 years ago remains the most points scored and biggest winning margin in any fixture in the competition's history.

Italy have lost their last 33 matches in the competition – the longest losing streak by any team in the Five or Six Nations – in an unwanted run that stretches back to a win over Scotland in 2015.

Eddie Jones' visitors have lost their last two Six Nations matches, but only once over the last 15 editions have they lost three in a row, while not since 2005 have they lost their opening two games to a campaign.

ONES TO WATCH

Italy's Michele Lamaro (21 tackles) was one of just three players to make 20 or more tackles during the opening weekend, along with Basham (22) and Nick Tompkins (21). However, he also missed four tackles, which was the joint-most of any player, level with Dan Biggar.

Ben Youngs, who made the most kicks in play of any player in round one (17), is one of six players to make way for England. Should the experienced scrum-half make it off the bench, he will become England's joint-most capped player of all time alongside Jason Leonard with 114.

Joel Embiid extended his scoring run as the Philadelphia 76ers won their first game since trading for James Harden on Friday.

The 76ers have been busy in trade action this week, finally moving on Ben Simmons to the Brooklyn Nets and receiving Harden in exchange, but focus returned to the court against the Oklahoma City Thunder.

Former MVP Harden is yet to make his 76ers bow, but Embiid – perhaps the best performer of this NBA season – continued to perform without him.

The Cameroonian center had 25 points, 19 rebounds and five blocks in the 76ers' 100-87 win, which also saw Tyrese Maxey score 24.

This was Embiid's 22nd straight game with 25 or more points in a sequence only three players – Kevin Durant (twice), new 76er Harden and former 76er Allen Iverson – have topped this century.

Embiid, who shows no sign of slowing, had already secured the best streak by a foreign-born player of the past 50 years when Giannis Antetokounmpo's 20-game run ended against the Phoenix Suns on Thursday.

Pacers new boys beaten

The 76ers next play the Cleveland Cavaliers, who will be on a high after a dramatic late show against the new-look Indiana Pacers.

The Pacers, fired by debutants Tyrese Haliburton (23 points) and Buddy Hield (16 points, nine rebounds, eight assists), did not trail at any point until late in the fourth quarter at home to the Cavs.

But Rajon Rondo's three-pointer swung momentum in the Cavs' favour, and their own recent signing Caris LeVert had a key role late on as he finished with 22 points in a 120-113 win.

More debutants deliver

Haliburton and Hield were not alone in making an instant impression.

Montrezl Harrell had 15 points as the Charlotte Hornets routed the Detroit Pistons 141-119, also boosted by 31 from LaMelo Ball and a triple-double for Terry Rozier. Meanwhile, Derrick White's 15 from the bench helped the Boston Celtics see off the Denver Nuggets despite Nikola Jokic's triple-double.

It was not all about those who have been on the move this week, though, as Jokic showed.

Dejounte Murray had a 32-point triple in the San Antonio Spurs' defeat of the Atlanta Hawks, while DeMar DeRozan's remarkable season continued with his fifth straight 30-point game.

DeRozan reached 35 as a blistering fourth quarter took the Chicago Bulls past the Minnesota Timberwolves 134-122.

Casper Ruud will have to overcome another home hopeful if he is to reach the final of the Argentina Open in Buenos Aires.

Top seed Ruud defeated Federico Coria 6-3 6-4 in the last eight on Friday to set up a semi-final against another Argentinian in Federico Delbonis.

Delbonis defeated Fabio Fognini 6-4 6-4 to make his first semi since losing to Pablo Carreno Busta in Hamburg last July.

The 31-year-old has not played an ATP Tour final since winning in Marrakech in 2016.

There will be a home representative remaining in the other half of the draw, too, although his identity is still to be confirmed.

Diego Schwartzman and Francisco Cerundolo were tied in the third set when rain saw play suspended for the day.

The winner of that match will play Fognini's compatriot Lorenzo Sonego, a straight-sets victor against Fernando Verdasco.

At the Dallas Open, there is an all American cast for the semi-finals – but top seed Taylor Fritz is not among those in the last four.

He lost a third-set tie-break to countryman Marcos Giron, whose reward is a match against Jenson Brooksby. Brooksby beat Australia's Jordan Thompson 6-3 6-0.

John Isner breezed through in straight sets and will face Reilly Opelka.

Consistent domination is difficult to achieve in the NFL. Not since the 1993 season have the same teams played in the Super Bowl in successive years and no team has won back-to-back Super Bowls since the 2004 New England Patriots. Parity is one of the league's primary selling points but, while it largely retains a balance among clubs in terms of results on the field, there can be no doubt there is a scheme establishing dominion over the NFL.

Sunday's clash between the Cincinnati Bengals and Los Angeles Rams will mark the third time in the last four seasons that an NFL campaign has come to end with a game featuring at least one team employing a version of the offense run by Kyle Shanahan and Sean McVay.

With McVay going up against his former assistant in Bengals head coach Zac Taylor, Super Bowl LVI will serve as a compelling illustration of the pre-eminence that offensive scheme enjoys, and this recent round of coaching hires also painted the same picture.

The Miami Dolphins hired Shanahan's offensive coordinator for the San Francisco 49ers, Mike McDaniel, to be their new head coach. Nathaniel Hackett, having worked as offensive coordinator in that offense under Matt LaFleur with the Green Bay Packers, was appointed as the Denver Broncos head coach. Kevin O'Connell, the Rams offensive coordinator, cannot officially be hired by the Minnesota Vikings until the Super Bowl is over, but that agreement has already been reached.

Those hires have taken the tally of offensive head coaches from the Shanahan-McVay tree to five. Robert Saleh was Shanahan's defensive coordinator in San Francisco until 2021, and he took Niners passing game coordinator Mike LaFleur with him when he was hired by the New York Jets. Brandon Staley got the Los Angeles Chargers job last year after one season revolutionising the Rams on defense for McVay.

The fingerprints of Shanahan and McVay are all over the NFL, and they will be overtly smudged over the Super Bowl. One offensive system having this level of influence over the league feels unprecedented, but is it? 

"If you look back at it, I assume if you did the actual lineage of it, the way that the league looked in the mid-90s, early 2000s, most of it probably comes enough from the Bill Walsh tree to say it's similar," Robert Mays, NFL writer for The Athletic, tells Stats Perform. 

"It starts fragmenting because even if you look at the genealogy of the Shanahan tree, it comes from the Bill Walsh tree, because you have Mike Shanahan coming from San Francisco, they combine it with the wide zone running scheme, so now even that DNA is still sort of similar, if you go back far enough it all comes from the same place, but no I can't remember anything like it in this modern era, the last 10 years or so, because there just hasn't been anything similar. There were a lot of the Seattle defensive guys on that side of the ball but it still wasn't as popular as it is right now."

So why is it so popular? The obvious answer is its success.

The 49ers (first), Rams (fourth), Bengals (seventh) and Packers (eighth) all finished the regular season in the top 10 in yards per play. All four were playing on Divisional Round weekend.

But it is more than just the offensive efficiency and the results that have made Shanahan, McVay and now LaFleur assistants attractive to teams looking to turn their fortunes around, it is also a combination of the scheme, the adaptability of the scheme and the willingness of the coaches to take a flexible approach.

"What you have to understand about why the Niners are successful, why Sean is successful, it's not because they run this offense, it's their understanding of defensive rules and how to manipulate them is what makes them really successful, they all just happen to come from the same place," Mays explains.

"I think the quarterback-friendly aspect of it is really important. How they attack the middle of the field, the play-action, I do think it's the easiest way to get the most out of a quarterback in a quarterback-centric league.

Speaking to the quarterback-friendly nature of the offense, Rams quarterback Matthew Stafford threw to an open receiver on 82.5 per cent of his attempts, second behind Patrick Mahomes (85.5) among signal-callers with at least 200 pass attempts. Zach Wilson (79.5), playing in Mike LaFleur's offense, was 10th, and the likely departing 49ers quarterback Jimmy Garoppolo was still above average on 79.1 per cent.  

It goes beyond the quarterback, though, with wide receiver Andrew Hawkins, who played under Shanahan and Mike McDaniel during his time with the Cleveland Browns, enjoying personal experience of how they get the most out of the surrounding talent.

"The thing that anybody who played for Kyle, the Mikes and the LaFleur's and the McVay's, they figure out their offense around the players," Hawkins told Stats Perform. 

"It's traditional for coaches to say 'here's my system' and they're gonna get jobs off their system and they say 'this is my system, this is the way we run it, this is the kind of tight end we need, we need this quarterback to do these things, we need this guy to do this and if they're not these kind of guys I'm gonna go find people who will do what I say, my system bang, bang, bang'.

"Shanahan and those guys, they don't do it that way. They are, I don't want to say true coaches, but to me, they're the best version of it because they'll come into a place and say hey Hawk, you're limited here, but you do these things really, really, really well and although my last receiver might have been 6'4", 215 pounds, your skill set is this so we're going to change things around that fit your skill set and get the best out of you for the best version of our offense it can be.

"That's what you want as a player, you want your coaches to understand your skill set and maybe not ask the 5'7" guy to go make jump-ball catches in the red zone, it's not exactly what I do, it's not my thing, I like to be in space, let's find ways to get me in space and that's what they'll do.

"They'll cater it to their players, to their O-Line, to their running backs, to their outside guy, their inside guy, their tight end, as players you want coaches who are gonna tell you the truth and put you in the best position to win for your skill set. Don't try to fit a square peg into a round hole and those coaches, just by philosophy, do it better most guys in the league."

Agreeing with Hawkins' assessment, Mays adds: "It's interesting because it takes on different flavours, that's the most important thing, you have to understand how it is tailored to your personnel."

And, though Taylor, cut his teeth under McVay, the way he has tailored his Bengals offense to his personnel has made their attack markedly different from that of the Rams.

Burrow did not throw to an open receiver as often, doing so just 76.9 per cent of the time, but that is reflective of a more aggressive downfield passing game that has regularly relied on the ball-winning skills of Ja'Marr Chase and his quarterback's unerring accuracy.

This season, Burrow led the NFL by delivering an accurate, well-thrown ball on 86.1 per cent of his pass attempts as his skill set meshed perfectly with a more ambitious passing game. No player produced more passing plays of more than 50 yards than Burrow with 12. Next on the list, Stafford, with 10.

"It's very different, it's much more spread out than you would see with Sean's offense, the Bengals are a spread team, they play in the shotgun, they have one of the widest formations on average in the entire NFL, they are not doing a lot of things that the Rams are doing," Mays says of the Bengals' attack.

"I think it's really tailored to, this is what we are, we have a true X receiver on the outside, we honestly have two because of what Tee Higgins is, we don't need to worry about all those bunches and stacks and things like that, and they run very little play-action, you think about the fact that Zac was under Sean in 2018 when the Rams were running play-action 38 per cent of the time or whatever it was, and the Bengals are like under 20 with one of the lowest rates in the entire NFL."

Matt LaFleur weaponised the scheme in Green Bay via the brilliance of Aaron Rodgers, McVay has molded it around Stafford following the trade that sent Jared Goff to Detroit and moved away from play-action somewhat while Shanahan has leaned heavily on the run with the 49ers. McDaniel, O'Connell and Hackett will surely recreate the system to mesh with their respective talent pools and, ultimately, what owners and general managers are buying when they invest in an assistant from the McVay and Shanahan offense is not the scheme, but the ingenuity these coaches gain from their association with two of the most talented football minds of this generation.

"I think what people are searching for when they hire all these Sean assistants, aren't necessarily we want this offensive system, it's we want whatever environment comes with these guys from this place," Mays observes. "Brandon Staley's not an offensive coach and they still hired him to be the head coach.

"I think they're trying to capture whatever this kind of incubator of football ideas is, that I feel like is what they're trying to tap into as much as the actual Xs and Os of the offensive scheme."

Sahith Theegala recovered from a tricky start on Friday to maintain a breakout run at the Phoenix Open, where he now leads by two after two rounds.

Theegala, playing on a sponsor's exemption, had taken a one-shot lead into the day's play – albeit only after a suspension on Thursday due to bad light.

Starting with a par putt at the 17th on seven under, Theegala missed the hole and then bogeyed the 18th, too, falling back to five under.

But the 24-year-old, who turned professional in 2020 but is still living with his parents, got back in the groove in round two.

Three consecutive birdies and a fourth at the par-four fifth put Theegala in a great position, turning in 32 after a bogey at the eighth.

It only got better from there with a bogey-free back nine that featured four birdies, including at each of the last two holes – ending his Friday in far more convincing fashion than he had started it.

Theegala's only top-10 finish on the PGA Tour to date was a tie for eighth at the Sanderson Farms Championship in October, but he heads into the weekend at Scottsdale leading a star-studded field.

"I haven't had time to let it set in," he said after signing for a seven-under 64 to move to 12 under.

"Hopefully I don't think too much about it, because obviously what I've been doing has been working the first couple days.

"I'm just thankful that I'm here and trying to make the most of the opportunity – no expectations at all, honestly."

Having already threatened to crumble once, the pressure is only set to ramp up from here. Theegala's closest challengers are Brooks Koepka (66) and Xander Schauffele (65) at 10 under. Patrick Cantlay (66) is a shot further back.

"I'm ready to embrace whatever is ahead of me this weekend," Theegala added.

Russell Westbrook has claimed his back injury stems from "sitting down for long stretches" on the Los Angeles Lakers' bench.

Westbrook and the Lakers have endured a dismal season following his move from the Washington Wizards.

The former MVP, who averaged a triple-double last year for the fourth time in his career, has struggled to have an impact for a Lakers team who have missed star men LeBron James and Anthony Davis for long periods.

Westbrook is averaging 18.3 points – his lowest mark since his second season in the NBA in 2009-10 – along with 7.8 rebounds and 7.6 assists.

Lakers coach Frank Vogel has seemingly lost faith in the point guard, who has started all 55 games this year but is finding himself on the bench at crunch time.

Twice in 2022 Westbrook has not played a single second for the Lakers in the fourth quarter – most recently in their last game, a loss to the Milwaukee Bucks.

Before the Bucks defeat, Westbrook was also kept on the bench for the entirety of overtime against the New York Knicks, having scored a season-low five points on 1-of-10 shooting in 29 minutes.

The player was then missing from this week's Portland Trail Blazers game that followed the Bucks' visit, and he – along with James – has been listed as questionable for Saturday's game at the Golden State Warriors.

Asked to explain the back pain that is keeping him out of action, Westbrook said on Friday: "It comes and goes.

"I'm not accustomed to sitting down for long stretches and getting up and then, like, moving quickly. It kind of stiffens up a little bit."