Another great day in the pool saw Team GB and the Russian Olympic Committee secure one-twos, while teenager Lydia Jacoby earned a surprise triumph and Kaylee McKeown brought home another swimming gold for Australia.

There was also a further look at Ariarne Titmus and Katie Ledecky at the Tokyo Aquatics Centre, with the pair securing their passage to the final of the women's 200 metres freestyle.

Here is a round-up of Tuesday's goings-on in swimming at the Olympics.

MORE AUSSIE SUCCESS AS MCKEOWN SETS NEW OLYMPIC MARK

Just a day on from Titmus' thrilling win over Ledecky in the 400m freestyle, Australia had more reason to celebrate in the pool on Tuesday as McKeown won the 100m backstroke, becoming the first Australian woman to triumph in the event.

Her time of 57.47 seconds established a new Olympic record, the fourth time this week in the event a new benchmark has been set, and was only 0.02 seconds off her own world-record time.

Kylie Masse had led at the 50m mark and the Canadian held off the challenge of Team USA's Regan Smith to take silver.

DEAN PIPS SCOTT AS GB GO ONE-TWO

A thriller in the men's 200m freestyle saw Tom Dean pip Duncan Scott to gold as two British male swimmers stood on the same Olympic podium for the first time since 1908.

Scott was fastest in Monday's semi-finals and a blistering finish put him right in contention, but it was Dean, having made a superb opening, who just touched home first by four hundredths of a second.

"I knew it was going to be a dog fight," Dean, whose time of 1:44.22 is a new British record, told BBC Sport.

"I didn't know how people were going to swim it. It was just race to race."

TEENAGE KICKS AS JACOBY UPSETS THE ODDS

The shock of the session came in the women's 100m backstroke where American world-record holder Lilly King and Olympic benchmark setter Tatjana Schoenmaker of South Africa were favourites for gold.

There was an American winner but it was not King, the honour instead going to 17-year-old Jacoby, who became only the sixth swimmer to break 1:05.

The teenager broke free in the final 20m and defending champion King was proud of her younger team-mate's phenomenal achievement.

"We love to keep that gold in the USA family so this kid just had the swim of her life and I'm so proud to be her team-mate. I'm proud to get bronze for my country," King said.

RUSSIAN DUO BEAT MURPHY IN 100 BACK

Defending champion and world-record holder Ryan Murphy had to settle for bronze in a lightning 100m men's backstroke final, which saw the Russian Olympic Committee secure a one-two.

Evgeny Rylov (51.98), the 200m back world champion, edged compatriot Kliment Kolesnikov (52.00) in a tight finish as the USA did not win either gold or silver in this race for the first time since 1980 – when they boycotted the Games.

TITMUS AND LEDECKY TO BATTLE AGAIN?

If Monday's 400m clash was anything to go by then we could be in for another treat at the pool on Wednesday. Titmus qualified fastest in the women's 200m freestyle, with Ledecky winning her heat and going through third quickest overall.

Kristof Milak, who owns the world record, swam fastest in the men's semi-finals for the men's 200m butterfly, while Kate Douglass was quickest in the semis for the women's 200m individual medley.

South African eighth-seed Lloyd Harris was bundled out by Australian Jordan Thompson 7-6 (7-2) 1-6 6-2 in a seesawing contest.

Thompson, who is ranked 63rd in the world, got the better of Harris, showing to grit to win in two hours and 30 minutes.

In the final match of the day, play was suspended due to rain and lightning after the first set with American Sam Querrey leading 6-4 against German Peter Gojowczyk.

Former world number 11 Querrey sent down 12 aces in the first set before the weather intervened.

The winner of Querrey and Gojowczyk will take on Thompson.

Steve Johnson defeated Alexei Popyrin 7-6 (7-4) 6-3, while Bjorn Fratangelo beat Italian Andreas Seppi 7-5 7-6 (7-5).

After a seventh-place finish in the Eastern Conference was followed by a first-round exit in the playoffs, the Boston Celtics decided it was time for change.

Danny Ainge, the long-time director of basketball operations, is out. Brad Stevens' reign as head coach is over too, though he has switched from orchestrating plays on the sideline to making deals in the front office. His replacement on the bench, Ime Udoka, is an experienced member of supporting casts who finally gets a chance to take on a lead role.

The revamp was not just restricted to team staff, either.

Kemba Walker – seen as a major addition in 2019 – was deemed expendable amid concerns over both his long-term health and salary number. The deal with the Oklahoma City Thunder came at a cost – Boston had to give up their first-round pick in this year's draft as a sweetener – but it may not be the final move for a franchise aiming to regain momentum.

For so long, the Celtics were viewed as a team on the rise. A plethora of burgeoning talents were allowed to develop under the highly rated Stevens, a graduate from the college system who steered them to the Eastern Conference Finals on three occasions between 2017 and 2020.

However, 2020-21 was undoubtedly a step back. A 36-36 record in the regular season, albeit amid the backdrop of a global pandemic, was a surprise. Losing to the Brooklyn Nets in five, however, was not. In fact, the only shock was that they managed to avoid being swept.

So what happens in the next chapter of the Celtics story? Stevens must work out the path for a team that, after playing the long game, has quickly been left behind by its rivals

Boston's double act offers hope

Capitalising on a plethora of draft picks stockpiled over time, the Celtics had sculpted a roster that appeared a step away from moving onto the next level. Major moves were made to try and tip the balance: Kyrie Irving appeared the perfect marriage only for the relationship to flame out, while Gordon Hayward endured a hugely unfortunate start and never completely recovered.

Walker has gone now too, leaving Jayson Tatum and Jaylen Brown as the two fundamental pillars in place for Boston to build around.

Brown finished with a career-high 24.7 points per game at the end of the regular season, a figure aided by shooting 39.7 per cent from deep when averaging 7.1 three-pointers an outing. He attempted more shots in general, with his 19.2 field goals up from 15.6 in the previous campaign. There was also an upturn in assists as well.

However, a wrist injury meant he missed the series against the Nets. Tatum fought a lone hand, including a 50-point performance in Game 3. He became the third Celtic to reach a half-century in a regulation playoff game, joining a select group that also includes John Havlicek and Sam Jones.

Yet that stunning performance merely delayed the inevitable. In putting together a big three, the Nets had jumped the queue in the East. Boston were one of only two teams to have a pair of players finish in the top 20 for points per game in the regular season. The other? Brooklyn, of course.

Tatum averaged an impressive 26.8 points per 75 possessions to continue on an upward curve. Kevin Durant described the third overall pick in the 2017 draft as a "tough, tough cover" after trying to keep him quiet during the first-round matchup. Like Brown, the 23-year-old showed his all-round capabilities by setting career-high averages for points, rebounds and assists.

His usage rate of 30.8 per cent for every 75 possessions was both a sign of his growing status and also a by-product of an ever-changing cast around him. The Celtics used 37 different line-ups – only three teams topped that figure – as injuries and the added wrinkle of the NBA's COVID-19 protocols left Stevens consistently shuffling the deck on a nightly basis.

However, the absences should not paper over the cracks: Brown and Tatum - whose absence from an All-NBA team cost him $33million in his rookie extension – need help.

Moving on from Walker

Boston hoped Walker would be a multi-dimensional scoring guard who could also facilitate for others. The issue was he did not play nearly enough to merit holding on to that ideal any longer.

Walker was restricted to 43 appearances in the regular season, during which he averaged 19.3 points per game – his lowest total since 2014-15. The team was marginally better with him on the court – they scored at 113.2 points per 100 possessions, compared to 109.6 without – though played at a slightly higher pace when the former Charlotte Hornet was absent.

Taking into consideration the likelihood of the four-time All-Star utilising his player option for the 2022-23 season, there was over $73m left on his deal. Boston did get something in return from the Thunder, as a familiar face returned for a second spell (more on that later).

Walker's departure provides some cap relief, of course, but it also leaves a sizable hole in the roster. Marcus Smart appears the in-house option to start at point guard, yet he is heading into a contract year and is still yet to demonstrate how he can be relied upon for consistent offensive production.

His 14.2 points per 75 possessions ranked him 222nd in the league, although a player with a reputation for being a pest to opposing teams posted a defensive rating of 112.8, the highest of his NBA career. As he heads into his eighth season, Smart is a solid contributor capable of making plays without the ball, yet also someone opposing teams do not fear having possession in crunch time.

The same may well be said for Al Horford, even if the Celtics are not quite getting the same player who said farewell to Boston in 2019.

You can call me, Al

Life in Philadelphia did not pan out for Horford following his move in free agency two years ago, with him stuck as the odd man out in a crowded front court where Joel Embiid rules the roost. His time in Oklahoma was short-lived, but now he is back in familiar surroundings.

The 14-year veteran returns having become a more frequent three-point shooter since his first stint – his average of 5.4 attempts in 20 games for the Thunder was a career high, a stark contrast to the player who tried 18 shots from beyond the arc across his first six years in the league.

His playmaking abilities will help lighten the load on Brown and Tatum, while his experience should be invaluable to promising big Robert Williams, whose effective field goal percentage of 72.1 left him behind only DeAndre Jordan in the entire NBA.

Williams also showed he can be a presence on defense, with only five players averaging more blocked shots per game. The third-year center is a low usage, high-value finisher when close to the rim who is primed to take on a starting role.

In general, however, Boston's defensive numbers suffered a dip. Having ranked second in the category in 2019-20, giving up 107.3 points per outing, they fell outside the top 10 this term, their points against number finishing up at 111.2

The Celtics also have a decision to make over Evan Fournier, the trade-deadline addition who is now a free agent. Outside shooting is a must in the league, and the Frenchman was successful with 46.3 per cent of his three-point attempts in the regular season following his arrival from the Orlando Magic.

Last year's first-round selection Payton Pritchard, who shot 46.7 per cent when averaging 2.5 catch-and-shoot three-point attempts, showed signs of promise, but Boston still needs more shooting depth.

Verdict: Evolution

The revolution may have already occurred in Boston. After over 600 games as the head coach, Stevens wasted no time in making an impact following his change of roles.

However, a full re-shaping of the team would require trading away one of the core pieces he has worked so closely with over recent years. Smart, who makes just over $14m on an expiring deal, appears the most trade-friendly asset: the Celtics know the clock is ticking.

Whether Smart sticks around or not, Boston needs more to aid their dynamic duo in Brown and Tatum. The cap situation suggests dipping a toe into the free agency waters, rather than diving right in. There is no point pinning too much faith on the draft process for help either, as their first-round selection is now sitting in the Thunder's treasure chest of picks.

Stevens will survey the landscape and acknowledge standing still is a risk. Brooklyn have their big three, Giannis Antetokounmpo is ensconced in the East with Milwaukee and the Atlanta Hawks have suddenly found their wings to make a run to the Conference Finals.

His final year saw Boston average 1.18 points per possession, behind only the Sacramento Kings, while their effective field goal percentage of 63.3 ranked fourth. There is much to like about this group, yet also a feeling that standing pat is a risk with few potential rewards.

If there is a shortcut to potentially becoming a title candidate, it could be in the form of a frustrated superstar ripe for picking off in a blockbuster trade. That, however, would require a change of mindset when it comes to how they have gone about team building in recent years.

Moving Walker was a fine start, but Stevens the GM has to get creative if Boston are to get back involved in the title race again, rather than just making up the playoff numbers.

The Memphis Grizzlies are trading up to the 10th pick in Thursday's NBA Draft but must give up Jonas Valanciunas to the New Orleans Pelicans while taking Steven Adams and Eric Bledsoe in return.

ESPN reported the Grizzlies were finalising a deal on Monday that would see them trade selections 17 and 51 for the Pels' 10 and 40 as well as a top-10 protected 2022 pick via the Los Angeles Lakers.

Lithuanian center Valanciunas leaves Memphis after two and a half years, having been the team's third scorer in 2020-21 with 17.1 points per game behind Ja Morant (19.1) and Dillon Brooks (17.2).

He also averaged 12.5 rebounds but heads to New Orleans, where he will be expected to create space for Zion Williamson.

It means another offseason of flux for the Pels, who selected Williamson with the first overall pick in 2019 as former number one selection Anthony Davis left for the Lakers.

The team have so far struggled to surround Williamson with the right talent, although he was an All-Star last season with 27.0 points – the eighth-most in the league.

Adams and Bledsoe arrived in 2020 as another star performer departed, this time Jrue Holiday in a four-team trade. Holiday won the title last week with the Milwaukee Bucks.

Adams contributed only 7.6 points per game and struggled to work in tandem with Williamson, while Bledsoe's 12.2 points made for his worst scoring season since 2012-13.

Crucially, the pair were set to count for more than 21 per cent of the Pels' cap in 2021-22.

New Orleans now have the flexibility to make an offer to Lonzo Ball or to eye up other free agents, including linked Toronto Raptors great Kyle Lowry.

The Grizzlies instead take on Adams' $17.1million and Bledsoe's $18.1m, but they do also now get a look at a top-10 pick in a talented draft class.

Adam Peaty is convinced the morning starts for swimming finals are contributing to uncertainty in the pool at Tokyo 2020 and hopes defending his Olympic title sparks a gold rush for TeamGB.

Organisers have scheduled swimming finals to take place earlier in the day in the Japanese capital, with the heats being held in the evening.

There have been some notable shocks already, with home favourite Daiya Seto failing to make it out of the heats in the men's 400 metres individual medley, while Tunisian teenager Ahmed Hafnaoui earned an upset win from lane eight in the final of the 400m freestyle.

Coming into the Games, there was talk of whether Peaty could beat his own astonishing world record of 56.88 seconds in the 100m breaststroke.

While unable to do so, Peaty still dominated the competition, winning Monday's final in a time of 57.13, the fifth fastest of all time. 

For 26-year-old Peaty, ensuring he got the job done was the all-encompassing motivator given the way others have struggled.

"To be honest, I've never known swimming like this before," Peaty told a roundtable of journalists after winning gold in Tokyo.

"Normally you've got a solid one-two or maybe three if you can call it. You can't really predict it, in the 400 free there was a Tunisian guy [Hafnaoui] who won it in lane eight. 

"You can't predict that, so I think it is something to do with the morning finals and it's how the athletes adapt to that. I think it was the same in Beijing. 

"Sport is changing and the way we adapt, we train, and focus on mind and body and how we have to balance those. 

"I mean I'm fed up of talking about COVID but it's given us a chance to sort of really think differently about that and there's been a few breakout performances from COVID. 

"Would the medal table look very different last year? We don't know and we'll never know, but yeah it's definitely different."

Peaty, who became a father within the last year, was very open about the pressures he has been through in recent times.

Asked about the contributing factors to that pressure, Peaty said: "I mean put it simply we've seen over these two days, maybe three days, which is a lot of unexpected performances.

"A lot of people who should be going in here defending and winning medals are kicked out, especially in swimming we had Daiya Seto who is Japanese in the 400IM, he didn't make the final. 

"These Games are very, very different, and that's how we talk about pressure now. Mel [Marshall – Peaty's coach] said last night and a few of the other coaches have too, it's not about the times here, no one cares about the times, it's about the race, who wants it more in that last 20 metres. 

"It made me think completely differently, that every single championships I chase times because that's kind of validation for my training, I've trained really well this season.

"But it doesn't matter here, it's about the race, getting on that wall first, but also taking in every single trip and every single moment I can for these Olympics and hopefully inspiring as many people as I can while doing it."

It was five years ago in Rio where Peaty won TeamGB's first gold of the Games, acting as the springboard for a hugely successful Olympics whereby Great Britain won 27 golds and finished second in the medal table.

His success in Tokyo was also TeamGB's first and was quickly followed by triumphs for Tom Daley and Matty Lee in the men's 10m synchronised diving, while Tom Pidcock won the men's cross-country in mountain biking.

"I literally caught it, I caught Tom and Matt on the last dive and it was anti-climactic for me because I don't know how many rounds there are in diving – and I saw them dive, and I saw the Chinese dive because I think they were the last to go and I saw Tom celebrating and I thought 'oh my God they must have won' and yeah that's the beauty," added Peaty, who became the first British swimmer to defend an Olympic title.

"I said that it could be a catalyst, not that it's down to me, those athletes are amazing. But it shows you when we come together as a team and show that kind of community spirit anything is possible. 

"We've got three golds, who knows what the rest is going to bring, what the rest of the week is going to bring. 

"I know Duncan Scott is up in the morning on the 200 free and he's a very strong candidate for gold there. Hopefully we've got it rolling now and we'll see the gold rush, eh?"

Romelu Lukaku returned for pre-season training on Monday and outlined his excitement to work under new head coach Simone Inzaghi, who he feels can replicate Antonio Conte's work with Inter.

The Nerazzurri coasted to their first Scudetto since the 2009-10 campaign as they clinched the title with four games to spare, courtesy of a 20-game unbeaten run at the end of the season.

Despite Conte's title-winning campaign, the Italian head coach left by mutual consent in May before Inzaghi, who was previously at Lazio, was appointed at San Siro.

And after returning to Italy following Belgium's Euro 2020 semi-final exit, Lukaku, who scored 24 times in 36 league outings while also providing 11 assists in 2020-21, revealed how hungry he is to work with Inzaghi towards further success.

"We had a good chat on the day that the club announced that he was going to be the new coach and we also spoke when I was at the Euros," Lukaku told Inter's media on Monday.

"My brother has also told me plenty about him. He's a good coach. I think he’ll help the team achieve so much.

"We hope we can all work together to continue down the path that we've started."

Only in 2016-17 at Everton did the forward (25 goals) score more times in one of Europe's top-five leagues than last season and the Belgian promised to chase more silverware in 2021-22.

"We now have a few weeks to prepare as well as we can for the new campaign," the 28-year-old added. "We hope to do well and achieve even more than last year.

"I’m thrilled to be back. We hope to continue down the path that we’ve started and to keep winning. All the players will work hard to make your dreams come true."

Inter get their title defence underway at home to Genoa on August 21 after facing Atletico Madrid on August 7 in their final pre-season friendly.

Pedro Martinez outlasted Lucas Pouille to set up a second-round clash with fellow Spaniard Roberto Bautista Agut at the Generali Open.

World number 97 Martinez came through Monday's longest match, which lasted two hours and 43 minutes, as a 6-3 6-7 (4-7) 6-4 winner.

Mikael Ymer, who reached the quarter-finals of last week's Swiss Open Gstaad, is also through to the second round in Austria after battling past Pablo Cuevas 6-3 7-5.

Qualifier Jozef Kovalik will face Jiri Vesely for a place in the quarter-finals, meanwhile, after beating ninth seed Jaume Munar in straight sets.

Also through on Monday was lucky loser Carlos Taberner, who took advantage of his second chance by battling from a set down to overcome Thiago Seyboth Wild 3-6 6-3 6-2.

Aaron Rodgers reportedly plans to play for the Green Bay Packers this season.

Rodgers' future with Green Bay has been in doubt since April, when, a year on from the Packers trading up to select his heir apparent Jordan Love in the first round of the 2020 draft, it was reported he had grown so disgruntled that he had told some within the organisation he did not wish to return to the team.

The reigning NFL MVP was not present for any of the Packers' offseason practices, skipping their mandatory minicamp, but NFL Media's Ian Rapoport reported on Monday that Rodgers had indicated his desire to play for Green Bay this year to people close to him.

Meanwhile, speaking at the Packers' annual shareholders meeting at Lambeau Field, president Mark Murphy said of Rodgers: "We want him back, we're committed to him for 2021 and beyond. He's our leader and we're looking forward to winning another Super Bowl."

General manager Brian Gutekunst explained: "We have been working tirelessly with Aaron and his representatives to resolve the issues [Rodgers has raised], and we are hopeful for a positive resolution."

Should Rodgers return for 2021, the Packers will be among the favourites to reach the Super Bowl, having progressed to the NFC Championship in each of the previous two seasons, losing to the San Francisco 49ers and the Tampa Bay Buccaneers.

 Rodgers produced one of the finest seasons of his Hall of Fame career in 2020, flourishing in his second year in head coach Matt LaFleur's offense to the tune of 4,299 passing yards, a career-high 48 touchdowns and just five interceptions.

Per Stats Perform data, he was third in the NFL in well-thrown percentage, delivering an accurate, well-thrown ball on 82.4 per cent of his pass attempts.

He was also third in pickable pass percentage. Rodgers threw an interceptable ball on only 2.23 per cent of his passes.

While the Packers will be expected to be an NFC powerhouse again with Rodgers under center, his return could prove to be just a case of delaying the inevitable. Green Bay can save over $22million against the cap next offseason by moving on from Rodgers, making a trade potentially much more palatable.

With or without Rodgers, the Packers will begin their 2021 campaign on September 12 against the New Orleans Saints.

Another superb day for Japan saw the host nation surge to the top of the medal table at the Tokyo Olympic Games on Monday.

Japan now have eight golds after winning Olympic titles in three different sports, the most unexpected of which came in table tennis.

The mixed doubles team of Jun Mizutani and Mima Ito came from two games down to eventually prevail after seven games against China's Xu Xin and Liu Shiwen.

China won all four table tennis titles at Rio 2016 and had been expected to dominate again, only to come unstuck as Japan won the first gold in this new event.

Further joy for Japan came as 13-year-old Momiji Nishiya triumphed in the women's street skateboarding while Shohei Ono was victorious in the men's 73kg category in judo.

Second behind Japan are the United States, who took two shooting golds on day three as well as the men's 4x100m freestyle title in the pool.

China did not add to their tally of six gold medals, one fewer than the USA, having come up short in another event where they had a team of heavy favourites.

Cao Yuan and Chen Aisen were edged out in the men's 10m synchronised platform, with British divers Tom Daley and Matty Lee winning gold.

That was one of three golds for Great Britain, who moved up to fifth in the medal table thanks also to Adam Peaty retaining his 100m breaststroke title and Tom Pidcock dominating in the men's cross-country mountain bike race.

The Russian Olympic Committee sits fourth after adding three golds, the headliner being victory in the men's artistic gymnastics team all-around final. 

Meanwhile, Hidilyn Diaz made history for the Philippines, become the country's first Olympic gold medallist by prevailing in the women's 55kg weightlifting.