Anthony Joshua is "more confident" than ever and has signed the paperwork for his rematch with Oleksandr Usyk, according to the Briton's promoter Eddie Hearn.

Usyk dominated Joshua to claim the WBA Super, WBO and IBF titles at Tottenham Hotspur Stadium last September, condemning the 32-year-old to a second professional defeat.

Joshua activated his rematch clause but plans for a second bout were thrown into doubt after Usyk returned to Ukraine to defend his homeland following the Russian invasion.

However, Usyk has started preparing for the rematch in April, with the bout set to take place in Saudi Arabia, with the Ukrainian's promoter Oleksandr Krasyuk suggesting the clash will take place in August.

After a lengthy delay for confirmation of the fight, Hearn said on Saturday that the paperwork for the clash has been signed and a formal announcement will come next week.

"This fight is on and you will get an official announcement early next week," Hearn told BBC Radio 5 Live.

"[AJ] understands that in a fight of this magnitude, things do take time. It's taken time but we're in a great place. He's been training throughout, so has Oleksandr Usyk.

"AJ is more confident than I've ever seen him going into a fight. We believe he's going to win the fight."

Stephen Curry declared "it means everything" to keep the NBA Finals series alive after his sensational performance dragged the Golden State Warriors past the Boston Celtics.

Curry scored 10 of the Warriors' last 12 points, finishing with 43 overall after shooting 14-of-26 from the field and seven-of-14 from long range. He also added 10 rebounds and four assists.

That helped Golden State to a 107-97 road win to level the best-of-seven series at 2-2 as they prepare to return to the Chase Center for Game 5 on Monday.

Curry also played with an injury to his left foot throughout, but expressed his delight at returning to home-court advantage with the series even.

"It means everything knowing the sense of urgency we had to have tonight to win on the road and keep some life in the series, get home-court advantage back and try to create some momentum our way," he told reporters.

"It was a hard-fought win. I think the first quarter really set the tone. Even though we were down one, it was a night and day difference between Game 3 and Game 4 how we came out defensively, and that just gives you enough life to withstand some rough patches.

"And then find some runs. We get some stops, get out in transition, guys get involved. And you give yourself a chance to win it down the stretch.

"Proud of everybody in terms of our physicality, our focus, perseverance throughout the game. 2-2 is way better than 3-1 going home. Job well done tonight."

Curry registered 12 points in the first quarter to keep the Warriors just one point adrift, and the 34-year-old believes it was vital he set the tone.

"It's kind of how we wanted to start the game. We rely on Draymond [Green] bringing that energy and fire throughout the course of the season, and year after year," he added. 

"Felt like we just had to let everybody know that we were here tonight. Whether that's their crowd, their team, our team, whoever wants to see that energy and that fire, we feed off of that.

"I think it helped us just get settled into the game because our experience, you can want it so bad, you get in your own way a little bit and everybody feels a little bit of pressure, and it can go the opposite way.

"I wanted to try to leverage that in a positive direction for us to start the game."

Asked whether it was his best Finals performance as Klay Thompson suggested, Curry responded: "I can't rate my performances, though. Just win the game."

Jayson Tatum simply stated "I've got to be better" after the Boston Celtics were downed by a Stephen Curry-inspired Golden State Warriors in Game 4 of the NBA Finals.

Curry put in a Finals performance for the ages at TD Garden, scoring 43 points as the Warriors levelled the best-of-seven series at 2-2 with a 107-97 triumph.

It could have been different with the Celtics holding a four-point buffer prior to Curry – playing with a left-foot injury – making a couple of fourth-quarter baskets as part of 10-0 run that swung the momentum.

Tatum had 23 points and 11 rebounds but he made just one basket when playing in the entire fourth quarter, with the Celtics draining only two shots in the final seven minutes, the Warriors outscoring the hosts 21-6 in that time.

Speaking after the game, Tatum said: "I mean, you've got to give them credit, they're a great team, they're playing well.

"But it's on me, I've got to be better. I know I'm impacting the game in other ways, but I've got to be more efficient – shoot the ball better, finish at the rim better.

"I take accountability for that, and I just look forward to Monday, and leave this one behind us.

"We'll learn from it, watching film and things like that, but everybody probably feels like they've got to do better, myself included. [We'll] just go get it on Monday."

Asked about Tatum's scoring trouble, head coach Ime Udoka said: "At times he's looking for fouls. They are a team that loads up [defensively] and certain games he's finding the outlets, and certain games he's shooting over two or three guys.

"That's the balance of being aggressive and picking your spots, and doing what he's done in previous games which is kicked it out and got guys wide-open looks.

"That's an ongoing theme, so to speak, him getting to the basket and being a scorer as well as a playmaker, and they do a good job with their rotations.

"But sometimes he's hunting fouls instead of going to finish, I've seen that in a few games so far."

Curry's tally of 43 was the second highest he has posted in a Finals game, and Udoka conceded there were some plays his team could do little to defend against.

"Obviously we're focused on him, and keeping others in check, but some of those were some crazy shots that were highly contested that he made," Udoka added.

"You look at the overall numbers, the attempts, getting those off is the number we don't like – the 14 [three-point] attempts in general – he came out bombing early, he had nine in the first half.

"Some of the threes he hit were highly contested, and you can't do anything about those, but when we did switch, it kind of got some cross-matches on guys on the rim, and he went after them a little bit later and made some plays."

The series heads back to San Francisco for Game 5 on Monday.

Draymond Green said Stephen Curry simply "wasn't letting us lose" as the greatest shooter of all time scored 43 points to carry the Golden State Warriors to a 107-97 road win in Game 4.

The win tied the series at 2-2, swinging home-court advantage back to the Warriors as they prepare to head back to Chase Center for Game 5.

Curry's ridiculous performance included going 14-of-26 from the field, and seven-of-14 from long range, while also grabbing 10 rebounds and scoring 10 of the Warriors' last 12 points in a tense fourth quarter.

Andrew Wiggins also had a night to remember, pulling in a career-high 16 rebounds to go with his 17 points, finishing with a plus/minus of plus 20 in his 43 minutes, meaning the Warriors were minus 10 in the five minutes he was on the bench.

Speaking to the media after the win, Green let it be known just how special Curry was when his team needed him most.

"Incredible – [Curry] put us on his back, willed us to a win, a much-needed win," he said.

"He came out and showed why he's one of the best players to ever play this game, and why this organisation has been able to ride him to so much success. Just absolutely incredible.

"He's one of the most resilient, toughest guys that I've ever played with. The way defenses guard him, they're constantly grabbing, and he just continues to play… he just continues to do what he does.

"It says a lot about his toughness, and his competitive nature, and what it truly means to be a winner."

When asked if he had a feeling Curry was going to bring it tonight, Green said there was no way they were heading back home trailing 3-1.

"Yeah, [Curry] wasn't letting us lose," he said. "That's just what it boils down to.

"You hear all the noise… I could tell in his demeanour the last couple days, after Game 3, that he would come out with that type of fire, and we were all able to follow."

Warriors head coach Steve Kerr echoed Green's sentiments about Curry's virtuoso performance.

"Just stunning," he said. "The physicality out there is pretty dramatic.

"Boston's got obviously the best defense in the league. They're huge, and powerful at every position.

"For Steph to take that kind of pressure all game long, and then still be able to defend at the other end when they're coming at him, I think this is the strongest physically he's ever been in his career, and it's allowing him to do what he's doing."

He also made sure to give a mention to Wiggins for his game-changing effort.

"'Wiggs' was fantastic – to go against Boston you've got to deal with [Jayson] Tatum and [Jaylen] Brown," he said. 

"They're just powerful, skilled players. Great size, they're coming downhill at you constantly, so we have to have Wiggs out there.

"I thought he was great defensively, and obviously 16 rebounds – a career-high – and [a plus/minus of] plus 20. We needed every bit of his contributions."

The Minnesota Twins showed why they are a team on the rise as they defeated the Tampa Bay Rays 9-4 on Friday.

Twins center-fielder Byron Buxton went deep for the third consecutive day, and it was the second day in a row he has hit multiple home runs, with five in his past three games. 

He didn't have to wait long for his first, sending Drew Rasmussen over the fence as the Twins' second batter of the day, and after Isaac Paredes tied things up with his own solo homer, Buxton untied things with his second solo shot in the fifth inning.

Buxton's second home run ignited a massive fifth inning for the home side, with six hits and an error bringing home six runs, turning 1-1 game into a 7-1 blowout.

Sparks would fly again in the seventh inning as Randy Arozerena hit a rare inside-the-park home run for the Rays, and Vidal Brujan backed it up with a home run from the very next at-bat. 

Another Arozerena RBI in the eighth inning cut the margin to 7-4, but Twins star Carlos Correa made sure it was a comfortable final inning as he added two more insurance runs with a 410-foot bomb for the longest hit of the game.

On the mound for the Twins was Devin Smeltzer, who is quickly making his case as being the ace of the staff.

Smeltzer gave up three earned runs in six innings, which is the first time in his six starts this season he has allowed more than two earned runs.

Rasmuessen is having a strong season for the Rays, but he was beat up in this game, conceding seven runs in four-and-a-third innings, although three were unearned due to fielding errors.

New Yorkers are walkin' here

It was a pitching display at Yankee Stadium as the New York Yankees eventually came away with a 2-1 home win against the Chicago Cubs after 13 innings.

Yankees starting pitcher Luis Severino was terrific, striking out 10 batters while giving up one run in six innings, while Cubs start Wade Miley was withdrawn due to injury after pitching three scoreless frames.

A solo home run to Gleyber Torres in the fourth inning gave the Yankees the lead, until Jason Heyward answered with his own solo home run for the Cubs an inning later, and that would be followed by seven innings of shut-out baseball.

Eventually, in the bottom of the 13th inning, facing the 16th pitcher of the contest, Jose Trevino was able to send the fans home happy with a walk-off base hit.

Bryce Harper and the Phillies stay hot

The Philadelphia Phillies rattled off their eighth consecutive win as they jumped the Arizona Diamondbacks early on the way to a 7-5 win.

Philadelphia's reigning MVP Bryce Harper collected three hits from his four at-bats, but with no RBIs he relied on his teammates to show up in big spots.

Rhys Hoskins got the Phillies off to terrific start with a 423-foot home run in the first inning, before a three-run blast in the second to Kyle Schwarber helped blow the game open, leading 6-0 after two innings.

Daulton Varsho tried his best to drag the Diamondbacks into the contest, with a solo homer in the sixth inning and a two-run double in the seventh, but the Phillies bullpen was able to finish the job.

The Golden State Warriors produced a spectacular defensive second half to defeat the Boston Celtics 107-97 in Game 4 of the NBA Finals.

With the win on the road, the Warriors tied the series at 2-2, avoiding the dreaded 3-1 deficit that history shows is almost impossible to come back from.

From the jump, it was the Stephen Curry show, scoring 12 points in the first quarter to keep the Warriors in the fight, trailing 28-27 at quarter-time.

Eight quick points from Jordan Poole off the bench gave the Warriors a jolt to start the second period, before Jaylen Brown answered with 10 of his own. 

Ultimately it was the Celtics' defense controlling the second quarter, holding the Warriors to two-of-12 shooting from long range in the frame to win it 26-22 and head into half-time leading 54-49.

Everyone expected the Warriors to come out hot in the third quarter, and they did not disappoint, with Curry and Klay Thompson both hitting jump shots in the first 40 seconds, igniting a 30-24 period for the visitors.

Curry scored another 14 points in the third, with a late three giving the Warriors a 79-78 lead heading into the last.

All series the Boston defense has gone up a gear in the fourth quarter, but this time the Warriors gave them a taste of their own medicine, holding the home side to 19 points.

A Marcus Smart three-pointer with 5:18 remaining put the Celtics up 94-90, but they would score just three points the rest of the way, spanning nearly four minutes between Smart's bucket and Al Horford's three with 1:32 on the clock.

Curry capped off his magical performance with 10 of the Warriors' last 12 points, finishing with 43 points while shooting 14-of-26 from the field and seven-of-14 from long range. He added 10 rebounds and four assists.

Also shining when the Warriors needed him most was Andrew Wiggins, who snatched a career-high 16 rebounds, including some important offensive rebounds and put-backs with his team trailing, as he also chipped in 17 points and finished with a plus/minus of plus 20. His plus/minus trailed only Kevon Looney's plus 21.

For the Celtics, Jayson Tatum was solid, but scored inefficiently, with 23 points on eight-of-23 shooting, while adding 11 rebounds, six assists and three blocks. Brown was also respectable, scoring 21 on nine-of-19 shooting, while Derrick White added 16 off the bench.

Hunter Renfrow became the latest wide receiver to get a new contract, agreeing to a two-year, $32million extension with the Las Vegas Raiders. 

Renfrow’s new deal includes $21m in guarantees, a source confirmed to ESPN, and comes after the Pro Bowl slot receiver caught 103 passes in a breakthrough season, the third-highest single-season total in franchise history.  

Current teammate Darren Waller had 107 receptions in 2020 and Hall of Famer Tim Brown had 104 in 1997. 

Speaking to the media after the announcement, Raiders head coach Josh McDaniels shared why he values the Clemson product so highly.

"We are thrilled to have reached an agreement with Hunter Renfrow, and look forward to seeing him in Silver and Black for years to come," he said.

"Hunter is one of the true leaders on this team and he exemplifies the values of this organisation in how he comes to work every day. He is a tremendous teammate on and off the field and the entire Raider Nation is excited to see what the future holds for Hunter." 

Renfrow, Waller and offseason acquisition Davante Adams should give the Raiders one of the most productive trios of pass catchers in the league. 

Adams was acquired from the Green Bay Packers in March and the Raiders wasted no time in singing the star receiver to a five-year, $141.25m contract that includes a reported $67.5m in fully guaranteed money.  

Adams’ deal is the largest ever for a wide receiver and was the largest for any non-quarterback in NFL history in terms of annual value and total value, before the Los Angeles Rams signed defensive tackle Aaron Donald to a new $95m contract restructure earlier this week.  

Renfrow is the third key Raiders player to get an extension in the offseason under the new regime led by McDaniels and general manager Dave Ziegler. Quarterback Derek Carr signed a three-year, $120.5 million extension in April after edge rusher Maxx Crosby got a four-year, $94 million deal in March. 

Renfrow has 208 catches for 2,299 yards and 15 TDs in his three seasons in the NFL.  

Former Brooklyn Nets head coach and current Golden State Warriors assistant Kenny Atkinson will be hired as the next head coach of the Charlotte Hornets, with ESPN reporting that he will receive a four-year contract. 

Aktinson's head coaching experience with the Brooklyn Nets spanned from 2016-20. He compiled a 118-190 record during his time with the rebuilding Nets, but helped guide the team from 20 wins in his initial season to a 42-40 record in 2018-19 and a playoff berth. 

He was chosen to replace outgoing head coach James Borrego after a seven-week search during which the Hornets interviewed veteran coach Mike D’Antoni, former Portland Trail Blazers head coach Terry Stotts, and assistant coaches Sean Sweeney of Dallas, Charles Lee of Milwaukee and David Vanterpool of Brooklyn. They also interviewed Darvin Ham, who was hired by the Los Angeles Lakers.  

Borrego was fired on April 22 following a 43-win season with two years remaining on his contract. He went 138-163 during his four seasons at the helm of the Hornets and they were routed in the play-in tournament for the second straight season. 

Atkinson has a reputation as a talent developer and helped turn Caris LeVert, Joe Harris, Jarrett Allen and Spencer Dinwiddie into key players for the Nets, as well as elevating D'Angelo Russell to his lone All-Star appearance in 2019.  

The Hornets have key pieces in place with guard LaMelo Ball and much-improved forward Miles Bridges, as well as veteran Gordon Hayward, but they have a glaring need at center, which could be addressed in a number of creative ways with the NBA Draft and free agency approaching.  

Atkinson is the second Golden State assistant to accept a new job during the Warriors' playoff this season after fellow assistant Mike Brown accepted the role of head coach of the Sacramento Kings, though both are remaining with the Warriors through the end of the NBA Finals. 

Wyndham Clark was able to hold onto his outright lead at the Canadian Open with an even par second round on Friday, one stroke ahead of Rory McIlroy and the chasing field.

Clark remains at seven under after a spectacular 63 on Thursday, posting three birdies and three bogeys on his second trip around the course.

McIlroy headlines the five-man group at six under, along with American trio Keith Mitchell, Jim Knous and Alex Smalley, as well as England's Matt Fitzpatrick, who closed his round with three consecutive bogeys to surrender the lead.

Alone at five under in outright seventh is Austin Cook, who posted Friday's round of the day with his six-under 64, going bogey-free with six birdies to vault himself into contention after entering play at one over.

Scottie Scheffler and Sam Burns are in a logjam at four under, as is Shane Lowry, while Tony Finau and Harold Varner III are one further back at three under, rounding out the top-20.

Justin Thomas shot his second consecutive 69 to head into the weekend at two under, while English trio Danny Willett, Justin Rose and Aaron Rai sit at one under.

The second-best score of the round belonged to Cameron Smith, who shot a 65 to land right on the cut-line after a calamitous 76 in his opener.

Rory Sabbatini and Stuart McDonald missed the cut by one stroke, while Camilo Villegas was a further shot back after going five over on his last four holes.

The Buffalo Sabres will honour long-time goaltender Ryan Miller by retiring his No. 30 jersey next season.

Miller joined the Sabres in 2002-03 and spent 10-plus seasons with the franchise, becoming Buffalo's leader in wins (284) and games played by a goaltender (540).

He went on to eventually set the record for wins by an American-born goalie (391) and retired after the 2020-21 season.

The team made the announcement by releasing a video on Friday, which showed Miller being informed of the honour while touring the Sabres' arena with his wife, mother, sister and two children.

The announcement coincided with Miller's trip to Buffalo where he took part in a news conference to discuss being inducted into the Buffalo Sports Hall of Fame later this year.

"Ryan Miller embodied what people in Western New York expect from those who wear a Buffalo Sabres uniform: on-ice excellence, commitment, and authentic love for this community," Sabres general manager Kevyn Adam said.

"We are thrilled for Ryan to take his rightful place alongside his fellow Sabres legends and look forward to celebrating his career."

Miller, who also played for the St Louis Blues, Vancouver Canucks and Anaheim Ducks, had his best season in 2009-10 when he won the Vezina Trophy as the league's top goaltender and earned Olympic MVP honours for helping the United States to a silver medal at the Vancouver Games.

Miller joins NHL Hall of Famer Dominik Hasek as Sabres goalies to have their numbers retired. Miller's 391 career wins rank 14th in NHL history, two ahead of Hasek.

A New York Rangers fan has been banned for life from Madison Square Garden for punching a Tampa Bay Lightning fan in the face after Thursday's Game 5 of the Eastern Conference final.

Following the 3-1 Tampa Bay win that gave them a 3-2 series advantage, the Rangers fan and Lightning fan exchanged words while exiting the arena, police said.

A video surfaced on social media of the Rangers fan turning and punching the Lightning fan. He then struck another person who tried to intervene.

While the victim received assistance on the ground from witnesses, the assailant fled the arena.

Police confirmed that a 29-year-old Staten Island man was arrested for assault, disorderly conduct and harassment.

A Madison Square Garden statement released on Friday called the incident an "abhorrent assault."

"We are cooperating fully with law enforcement as this is now a criminal matter. The assailant will also be banned from The Garden and all other MSG venues for life," MSG said in its statement.

"All guests - no matter what team they support - should feel safe and respected in The Garden. This has and always will be our policy."

The Washington Commanders have fined defensive coordinator Jack Del Rio $100,000 for his dismissive comments about the 2021 storming of the U.S. Capitol building and for comparing the insurrection to protests against police brutality.  

Head coach Ron Rivera announced the fine with a statement on Friday, while public hearings are ongoing with the House of Representatives Jan. 6 investigative committee.  

On Wednesday, Del Rio referred to the attack on the Capitol building as a "dust-up" compared to the protests that took place in the summer of 2020 after George Floyd was killed in police custody.  

"I can look at images on the TV [of the Floyd protests] — people's livelihoods are being destroyed. Businesses are being burned down. No problem," he said on Wednesday. "And then we have a dust-up at the Capitol, nothing burned down, and we're going to make that a major deal. I just think it’s kind of two standards, and if we apply the same standard and we're going to be reasonable with each other, let's have a discussion.” 

Later on Wednesday, Del Rio issued an apology for his comment.  

"Referencing that situation as a dust-up was irresponsible and negligent and I am sorry," he said in a statement.

"I stand by my comments condemning violence in communities across the country. I say that while also expressing my support as an American citizen for peaceful protest in our country."

The NAACP has called for Del Rio to resign or to be fired.  

Rivera's statement said Del Rio's fine will be donated to the United States Capitol Police Memorial Fund.  

"As we saw last night in the hearings, what happened on the Capitol on January 6, 2021, was an act of domestic terrorism," Rivera said. "A group of citizens attempted to overturn the results of a free and fair election, and as a result lives were lost, and the Capitol building was damaged. 

"I want to make it clear that our organisation will not tolerate any equivalency between those who demanded justice in the wake of George Floyd's murder and the actions of those on January 6 who sought to topple our government."

Charl Schwartzel holds a three-shot lead going into the final day of the LIV Golf Invitational in London after another impressive performance at Centurion.

The South African followed up his five-under opening round by going four under on day two of the 54-hole tournament.

His compatriot Hennie du Plessis is six under with Peter Uihlein two strokes further back.

Dustin Johnson, the two-time major champion and highest-ranked player at the event, is in a tie for sixth at one under.

He is one of only eight players under par after 36 holes, with Phil Mickelson struggling to get to grips with the course.

Mickelson ended the day four over par and, though there is no cut, his hopes of victory at the end of a week overshadowed by his and Johnson's ban from the PGA Tour for joining the controversial breakaway have surely gone.