Rangers took a huge step towards winning the Scottish Premiership title as Callum McGregor's own goal gave them a 1-0 Old Firm derby win over Celtic.

Steven Gerrard's unbeaten team now lead their fierce rivals by a formidable 19 points at the top of the table.

Celtic still have three games in hand but their hopes of clinching a historic 10th straight title look increasingly slim, with this result piling the pressure on manager Neil Lennon.

Champions Celtic had the better of Saturday's match at Ibrox, but the tables were turned when Nir Bitton was sent off after 62 minutes.

Callum McGregor then inadvertently gave Rangers, who did not register a shot on target in the contest, a priceless winning goal.

Celtic made an excellent start and it took two pivotal saves from goalkeeper Allan McGregor to stop the visitors from going into an early lead.

He impressively got down low to deny Odsonne Edouard, who had not played in the last meeting between the sides, which Rangers won 2-0 in October.

The Rangers keeper then produced an even better fingertip stop to tip a 25-yard shot from Leigh Griffiths that was destined to find the top corner onto the post.

Gerrard brought on Ianis Hagi – who had been dropped from the starting XI in place of Ryan Kent – at half-time, with Kemar Roofe coming off and his side gradually began to improve.

Rangers got a big boost when Bitton was dismissed after wrestling Alfredo Morelos to the ground as the striker attempted to race on to a James Tavernier pass and looked like he had a clear path to goal.

They moved in front after 70 minutes, Joe Aribo flicking a Tavernier onto Callum McGregor, whose arm deflected the ball beyond Vasilios Barkas.

Celtic substitute Mohamed Elyounoussi shot just over but there was no way back for the 10 men, who have now lost three straight league derbies for the first time since 2008.

Ronald Koeman is happy for Lionel Messi to decide on his Barcelona future at the end of the season.

Messi asked to leave Barca in 2020 but ultimately stayed put, although he has made little effort to hide his displeasure with former club president Josep Maria Bartomeu.

The 33-year-old's contract runs out at the end of the season, and he is set to become the most highly sought-after free agent in history.

While Messi, who did not feature in a 1-1 draw with Eibar on Tuesday, is reportedly yet to fully decide on whether he will leave the club, head coach Koeman is not looking to hurry his captain.

"Leo is fine. He was training on [December] 30 and 31, while the rest of the squad was resting," Koeman said ahead of Barca's clash with Huesca.

"No doubt for him, he's got great fitness and he's prepared, happy and really excited. That's important for us.

"He has said that he no longer wants to make the decision [now] and it must be respected. You are free to report however you want. 

"He always does the best for the team, I see no problem that he doesn't decide now."

Barca's presidential elections are set to take place later this month, with several candidates offering up their plans for how to turn things around for the Catalan giants.

The camp of Emili Rousaud, one candidate, spoke of a potential move for Borussia Dortmund striker Erling Haaland, although speculation was swiftly stymied by agent Mino Raiola.

Koeman would like to be able to add to his squad in January but accepts that financial restraints may limit his options, while he does not expect any business to happen prior to the presidential elections on January 24.

"Yes. Without saying names, yes," Koeman replied when asked if he wanted new signings.

"There are players who find it difficult to play games and we want to strengthen the squad. Some don't have much of a future.

"I have already said that it depends on the new president and there will not be much time. We can be prepared. I cannot change the date of the elections."

Ronald Koeman expects to be without Philippe Coutinho for at least three months following surgery to repair a knee injury.

Coutinho suffered damage to the external meniscus of his left knee after coming on as a second-half substitute in Barcelona's 1-1 draw with Eibar on Tuesday at Camp Nou. 

The Brazil international was told he required an operation following further assessment and, while the club has yet to offer a timetable for his return, Koeman has confirmed it will be a lengthy absence. 

Speaking ahead of Saturday's LaLiga fixture away to Huesca, the Barca boss admitted it is a blow to lose another forward option, considering he is also without the services of Ansu Fati. 

"It's unlucky because we have so many important players out injured and Philippe will be about three months out," Koeman told the media.  

"He always has been an important player and he will be important, but now he has to recover, and I don't know when he will be 100 per cent fit.  

"An important absence. Up front, we are having some problems, of course, and I will have to see how we can solve Philippe's absence." 

Coutinho's injury will increase speculation over Barca making a move for long-time target Memphis Depay in the January transfer window. 

The Netherlands international is in the final year of his contract at Lyon and media reports in both France and Spain have suggested he could be available at a greatly reduced price, considering he can leave for free at the end of the 2020-21 season.

In the short term, Koeman will at least have Lionel Messi back for the game with Huesca, as Barcelona aim to avoid losing three successive games against newly promoted sides in the top flight for the first time in their history.

The Blaugrana were beaten by Osasuna in July towards the end of the previous season, then humbled by top-flight new boys Cadiz last month.

Son Heung-min scored his 100th goal for Tottenham in all competitions as he netted against Leeds United, with Harry Kane the provider once again.

The South Korea forward, who moved to north London in 2015, has been in sensational form in 2020-21, and moved onto 99 Spurs goals with a cool finish on the break at Liverpool in December.

Son drew a blank in his next three outings, failing to find the target as Spurs went down 2-0 to Leicester City, before he had a goal disallowed in an EFL Cup win at Stoke City and then only managed one attempt at goal in a 1-1 draw with Wolves on December 27.

However, after Wednesday's scheduled game with Fulham was postponed, his landmark effort came against Leeds on Saturday.

Kane – who has now assisted nine of Son's 12 Premier League goals this term – whipped in a brilliant cross from the right, which his strike partner swept home first time.

Son's strike put Spurs 2-0 up just before half-time, with Kane's penalty having put Jose Mourinho's men ahead.

With 169 goals to his name, Kane is the only Spurs payer to have netted more goals than Son since September 2015.

It was also the 13th time Kane and Son have combined for a goal this season, which is a joint-record in a single Premier League campaign.

Son has scored 65 of his 100 Spurs goals in the Premier League – 35 coming from his right foot, 25 from his left, and the remainder with his head.

The former Bayer Leverkusen forward has also supplemented that tally with a further 33 assists, while he has scored 15 times in the FA Cup and EFL Cup.

Dale Steyn has announced he will not be playing in the Indian Premier League this year, though the fast bowler insists he is not retiring just yet. 

Steyn was part of the Royal Challengers Bangalore squad for the 2020 edition of the Twenty20 tournament, with the competition temporarily moved to the United Arab Emirates due to the impact of the coronavirus pandemic in India.

The 37-year-old played in three games, taking one wicket, but has made himself unavailable for the franchise in the 2021 campaign. 

However, revealing his decision on Twitter, South Africa's record wicket-taker in Test cricket confirmed he will still feature in other T20 leagues around the world in the coming months, as he has no immediate plans to hang up the bowling boots just yet.

"Just a short message to let everyone know that I've made myself unavailable for RCB at this year's IPL," Steyn wrote.

"I'm also not planning on playing for another team, just taking some time off during that period. Thank you to RCB for understanding. No I'm not retired."

He then posted a further tweet, adding: "I will be playing in other leagues, nicely spaced out to give myself a opportunity to do something's [sic] I've been excited about as well as continue to play the game I love so much. 

"NO, I'm NOT retired."

Steyn did retire from Test cricket in August 2019, finishing his career in the longest format with 439 wickets at an outstanding average of 22.95.

However, he has continued to play for the Proteas in the T20 format; his most recent international appearance came against Australia in February 2020.

Calem Nieuwenhof and Luke Brattan scored superb long-range goals as defending A-League champions Sydney FC started their campaign with a 2-1 win over Wellington Phoenix.

A-League debutant Nieuwenhof slammed a brilliant strike into the top left-hand corner to put last season's premiers ahead in the 29th minute at WIN Stadium on Friday.

Mirza Muratovic – a close-season signing from Brisbane Roar – got off the mark for Wellington to level the scores on the stroke of half-time.

Another Sydney thunderbolt settled the contest, however, with Nieuwenhof's midfield partner Brattan picking out the top-right corner with a venomous free-kick.

Ulises Davila thought he had snatched a point for Wellington in stoppage time, only for his effort to have diverted in off Tomer Hemed, who was flagged offside.

In Friday's other game, Brisbane bounced back from their opening defeat to Melbourne City by overcoming Melbourne Victory 3-1.

Callum McManaman curled in a delightful finish on his debut to draw Melbourne level after Scott McDonald's opener, but Macaulay Gillesphey's header put Brisbane back ahead on the hour.

With Melbourne pushing for another equaliser – McManaman going close – Dylan Wenzel-Halls broke onto a long ball and, after twisting his way clear of his marker, slotted home to seal the points.

Patrick Williams took pride in guarding Giannis Antetokounmpo, even though the rookie could not stop the NBA's reigning MVP from delivering a stellar performance against the Chicago Bulls.

Antetokounmpo recorded 29 points, 12 rebounds and eight assists as he helped the Milwaukee Bucks to a 126-96 victory on Friday.

Milwaukee had seven players in double digits, and they hit 22 three-pointers. No team has hit more treble scores through the first six games of a season than the Bucks' tally of 108.

Despite the heavy defeat, Bulls head coach Billy Donovan was happy with the performance of Williams, who on his sixth appearance was tasked with the unenviable challenge of shadowing Antetokounmpo.

"I'm sure internally inside of himself he's probably saying, like, 'Wow, last year I was playing in college, the year before that I was in high school'," Donovan told reporters.

"It's a lot for a young player to handle. But he's got to kind of get thrown to it, and he's gotta learn it and experience it. But his attitude and his disposition, whatever you put in front of him is always the same."

Reflecting on his game, 19-year-old Williams said: "My chest is on fire right now just from the shoulders that [Antetokounmpo] gave me.

"I was just blessed to be in this opportunity for sure. Of course, we wanted to win the game, but now that we didn't win, we can learn from it.

"He doesn't really compare to any other guy that I've had to guard yet this season. But the next time we play them, I hope to guard him again and do better.

"Being able to guard somebody like that in my sixth game of the season, it means a lot. It means a lot that coach trusted me to guard him pretty much the entire game when I was out there. It shows the trust that he has in me and the trust that I have to have in myself. It means a lot for sure.

"I want to guard the best player every night. It's just the person that I am. I want to be the guy that always guards the best person. So, if I want to be that guy, I've got to learn from it. It's just a blessing."

Last month, Antetokounmpo signed an extension reportedly worth $228.2million (£170.1m) – the largest deal in NBA history.

Averaging 23.5 points per game, he has helped the Bucks – who have a home series against the Detroit Pistons up next – to three wins this season.

"I'd say the growth in my game comes from being less stubborn," Antetokounmpo told a postgame media conference.

"Keep your team-mates involved, got to look at the bigger picture. Being less stubborn, sacrificing for my team-mates."

LeBron James wants to see the Los Angeles Lakers get Marc Gasol more involved going forward.

James (26 points, 11 rebounds and 10 assists) and Anthony Davis (34 points and 11 rebounds) guided the Lakers past the San Antonio Spurs 109-103 in the NBA on Friday.

Gasol attempted just one field goal in his 20 minutes, while finishing with eight rebounds and three assists.

James hopes the Lakers can use the 35-year-old more often as the season progresses.

"I just think playing through him a lot more. When we do that, we're very good because his ability to see the floor, pass the ball, he does some special things out on the floor," he told a news conference.

"When he's on the floor, we have to do a better job of not playing much pick and roll with him setting the picks but more just letting him kind of play that point four or that point centre position at the top of the key, letting offense flow through him because he makes just great decisions.

"We're going to get him more involved because he's going to be a big part of what we do, we know that, he showed that already this year against Minnesota.

"We want to continue to just get him and Dennis [Schroder] and Trez [Montrezl Harrell] and Wes [Matthews] acclimated to what we want to do and go from there."

The Lakers (4-2) face the Memphis Grizzlies on Sunday.

New Zealand will aim to continue their winning streak in the second and final Test against Pakistan, with Kane Williamson's side having the chance to make history in Christchurch.

The home team won the opening game by 101 runs late on the fifth day in Mount Maunganui, finally seeing off spirited resistance from Pakistan's tail with 4.3 overs remaining.

Victory means the Black Caps have now won five Tests on the spin – they have never previously managed six in a row in the format.

There will be at least one change to their team for their first outing in 2021, Neil Wagner ruled out with a broken toe.

The left-arm paceman played on through the pain in the first Test, earning praise from Williamson. However, he is expected to be sidelined for six weeks, leading to New Zealand calling up Matt Henry.

As for Pakistan, they are set to be boosted by the return of captain Babar Azam, who missed the previous game – as well as the Twenty20 series that preceded the Test action – with a broken thumb.

Without their talismanic captain, the tourists were fragile at the top of the order. They fought back well from 52-5 to post 239 in their first innings, while nearly saved the game despite slipping to 37-3 second time around.

They will be up against it, though; New Zealand have lost only one of their previous seven Tests played at Hagley Oval, a seven-wicket defeat to Australia in February 2016.

ON TOP OF THE WORLD

Williamson had a fabulous 2020 in Test cricket, despite the international schedule being badly hampered by the coronavirus pandemic.

The right-hander had the highest average (83) in the format across the previous calendar year out of those players to have had at least four innings, with his knock of 129 in the first Test – combined with Steve Smith's struggles for runs against India – moving him back to the top of the ICC world rankings for Test batsmen.

A career-best score of 251 against West Indies substantially helped his cause. That was his only innings in the series too, as he missed the second Test due to the birth of his first child.

PAKISTAN SET FOR BABAR BOOST

The tourists felt the absence of their captain in the series opener and still almost fought their way to a draw.

Mohammad Rizwan, who was the skipper in the first Test, said Babar was on track for a return, but a decision would have to wait until Sunday.

"He is fine now. He wants to hit some more balls in the nets and we'll decide [on Sunday]," he said, via the New Zealand Herald. "He's a legend and wants to hit some more balls because [on Friday] he batted very well. If he plays, we bat around him. He has a great impact on our team."

Babar, 26, averages 45.44 in 29 Tests for Pakistan, who are aiming to level the series.

KEY OPTA FACTS

- New Zealand will be looking to win a third consecutive multi-game bilateral Test series against Pakistan.
- Pakistan are winless in their past 10 Tests outside their own country (D2, L8). However, their last such victory did come against New Zealand, by an innings and 16 runs (November 2018 in Dubai).
- Tom Latham has scored 579 Test runs at Hagley Oval, 214 more than any other player at the venue and his second most at any ground in the format (696 at Basin Reserve).
- Ross Taylor is 13 away from becoming just the fifth player to score 1,000 runs in Tests between New Zealand and Pakistan. He would be only the second Kiwi to achieve the feat (after Williamson).
- Tim Southee has a bowling average of 19.9 in Tests at Hagley Oval, his best at any home venue. He has picked up five or more wickets in six of his seven appearances at the venue.

The Los Angeles Lakers made it back-to-back wins in the NBA, while the Milwaukee Bucks thrashed the Chicago Bulls on Friday.

LeBron James posted a triple-double of 26 points, 11 rebounds and 10 assists as the Lakers beat the San Antonio Spurs 109-103.

Anthony Davis had a game-high 34 points, to go with 11 rebounds, as the Lakers enjoyed a second win in three days over San Antonio.

Keldon Johnson (26) and DeMar DeRozan (23) combined for 49 points for Spurs.

Giannis Antetokounmpo (29 points, 12 rebounds and eight assists) helped the Bucks crush the Bulls 126-96.

Milwaukee had seven players in double-digits and the Bucks hit 22 three-pointers.

No team has hit more threes through the first six games of a season than the Bucks' 108 to begin 2020-21.

Doncic lifts Mavericks, Leonard's Clippers lose

Luka Doncic finished with 27 points, 15 rebounds and seven assists in the Dallas Mavericks' 93-83 win over the Miami Heat.

Kawhi Leonard fell just short of a triple-double as he posted 20 points, 16 rebounds and nine assists, but the Los Angeles Clippers went down to the Utah Jazz 106-100.

The Portland Trail Blazers eased past the Golden State Warriors 123-98 thanks largely to 34 points from Damian Lillard. Lillard joined Clyde Drexler as the only players to score 15,000 points with the Trail Blazers.

Deandre Ayton's double-double of 22 points and 11 rebounds helped the Phoenix Suns improve to 5-1 with a 106-103 victory against the Denver Nuggets.

Nets slip to 3-3

Kyrie Irving struggled from the field, shooting six-of-21 for 18 points, as the Brooklyn Nets were beaten by the Atlanta Hawks 114-96. Kevin Durant finished with 28 points.

Grant delivers huge dunk

Jerami Grant produced a huge dunk as part of his 24 points in the Detroit Pistons' first win of the season – a 96-93 victory over the Boston Celtics.

Friday's results

Memphis Grizzlies 108-93 Charlotte Hornets
Detroit Pistons 96-93 Boston Celtics
Dallas Mavericks 93-83 Miami Heat
Atlanta Hawks 114-96 Brooklyn Nets
Milwaukee Bucks 126-96 Chicago Bulls
Washington Wizards 130-109 Minnesota Timberwolves
Los Angeles Lakers 109-103 San Antonio Spurs
Phoenix Suns 106-103 Denver Nuggets
Utah Jazz 106-100 Los Angeles Clippers
Portland Trail Blazers 123-98 Golden State Warriors

Kings at Rockets

The Sacramento Kings (3-2) take on James Harden and the Houston Rockets (1-2) on Saturday.

Philippe Coutinho will undergo knee surgery on Saturday, Barcelona have announced, as reports in Spain suggest he could be out for several months. 

The Brazil international was introduced as a 66th-minute substitute during Tuesday's disappointing 1-1 draw with Eibar at Camp Nou, but was unable to see the game out. 

On Friday, Barca confirmed the Brazil international will have an operation on the external meniscus of his left knee, after which a timetable for his return will be revealed.

A club statement read: "Philippe Coutinho will be operated on this Saturday for the injury to the external meniscus of the left knee by Dr. Joan Carles Monllau and under the supervision of the club's medical services.

"Once the surgery has been completed, further information will be provided to detail the approximate expected recovery time."

Several Spanish media outlets have reported the 28-year-old is likely to be out of action for an extended period of time, potentially not playing again until April.

Such a lengthy absence would be another blow for Barca boss Ronald Koeman, who is already without Ansu Fati, Sergi Roberto and Gerard Pique through injury.

Coutinho has made 14 appearances for Barcelona this season in all competitions, scoring three goals and providing two assists. He spent the previous season on loan at Bayern Munich, helping the German club secure a treble that included winning the Champions League.

Rumours had circulated he could leave the club in the January transfer window, but this latest setback looks to have ensured he will see out the 2020-21 campaign in Spain.

Sergio Ramos has not been named in Real Madrid's squad for their LaLiga match Celta Vigo on Saturday.

The Madrid captain did not train on Friday and, according to Marca, is struggling with a stomach issue.

Ramos, the only unexpected absentee from a 23-man group, has scored twice in 13 league appearances this season.

The centre-back has contributed to five clean sheets, averaging 1.1 tackles, 2.8 clearances, 1.5 interceptions and 0.3 blocks per 90 minutes.

He has made only a single error leading to a shot and received three yellow cards.

Madrid will have to adapt to the absence of the talismanic Ramos, having won just one of the three prior league games he has missed this term.

However, the defending champions are unbeaten in 12 against eighth-placed Celta in LaLiga.