Liam Smith fully regrets his homophobic taunts towards Chris Eubank Jr. and expressed his apologies for comments before January's middleweight clash.
Smith previously admitted he had "crossed the line" after being heavily criticised for asking Eubank Jr.: "Nobody in this room has ever seen you with a woman. Do you have something you want to tell us?"
Eubank Jr. responded by taunting Smith about his social class, with both boxers widely condemned and remaining under an ongoing investigation by the British Boxing Board of Control.
Those comments were made in the press conference leading up to the fight, which was won by former world champion Smith, who explained he still regrets his homophobic taunts.
He told Sky Sports on Thursday: "The stuff that got said at the press conference should never have been said, in any form of life, never mind at a boxing press conference.
"I'm facing the backlash of it still to this day, and there will be people I'll never win back over.
"I fully regret how that press conference went and what got said should never have been said, and again I apologise to anyone I offended."
Eubank Jr., who was subsequently stopped in the fourth round by Smith at Manchester Arena, wore a rainbow armband throughout the weigh-in as a response to those jibes.
Smith acknowledged he may never be able to convince people otherwise, though he insists his homophobic comments were out of character.
"Of course, I can understand people who looked into it, I can understand them thinking I was trying to make fun of it, but I fully wasn't and that was not my intention," Smith added.
"I get that there'll be people who will never accept my apology and I'll never get back on side now, and that's something I've got to live with going forward."
When pressed on how he would explain his remorse to an offended person, Smith said: "I do apologise and I fully understand why you're hurt by it.
"I'm not homophobic, I'm not a homophobic man, I'm a family man from a good family and I apologise for what got said."
Smith and Eubank Jr. are set for another bout after the latter activated his rematch clause, with suggestions that clash could take place at Liverpool's home stadium Anfield.
Odell Beckham Jr. received no assurances he will be able to link up with Lamar Jackson in Baltimore next season, but he hopes to.
The three-time Pro Bowler was confirmed as the Ravens' newest addition on Thursday on a one-year deal, having been available as a free agent since leaving the Los Angeles Rams, last appearing at Super Bowl LVI.
Beckham missed the whole of the 2022 campaign after a lengthy rehabilitation for an ACL tear sustained in that Super Bowl victory with the Rams.
The 30-year-old was introduced as a Raven in a press conference alongside general manager Eric DeCosta and head coach John Harbaugh.
And conversation unsurprisingly turned to quarterback Jackson, who has requested a trade but had the non-exclusive franchise tag placed on him and has not yet resolved his future.
"I didn't get any assurances for anything," Beckham said. "Life's uncertain. We don't know what's going to happen tomorrow or the next day; we only know what's happened in the past.
"To me, it's about the possibility of that [playing with Jackson]. My thoughts would be that he would be here.
"I know that these two want him to be here. At the end of the day, it's going to be up to them."
GM DeCosta remains optimistic, adding: "Lamar is in our plans. We're hopeful to still get a long-term deal. He's the right player for this team."
Beckham has 7,367 receiving yards and 56 touchdowns in 96 career NFL games and will join a Baltimore team who finished 10-7 in 2022, losing to the Cincinnati Bengals in an AFC Wild Card game.
On having the chance to play again, Beckham said: "I'm excited but also very determined and hungry. Through the smiles, there's still this [feeling] that I really want this badly."
He has reportedly signed a $15million deal worth up to $18m, with a base salary of $1.165m in 2023 to fit under the Ravens' salary-cap restrictions.
Great Britain has joined the breakaway international boxing federation, World Boxing, in an attempt to counter a threat to the sport's Olympic future.
World Boxing was established in response to issues surrounding the Olympic sport's existing governing body, the International Boxing Association (IBA), which was banned by the International Olympic Committee (IOC) in 2019 over governing issues and alleged corruption.
At the 2020 Olympics in Tokyo, boxing was organised by the IOC and the situation is the same for the 2024 games in Paris as, while World Boxing is seeking Olympic recognition, it may take up to two years for that to be achieved.
Boxing's position in the Olympics moving forward is under threat, with the sport left off the initial programme for Los Angeles in 2028 as the IBA has refused to implement the changes requested by the IOC.
In October, the IBA lifted its ban on Russian and Belarusian athletes, contravening IOC guidance, which saw multiple nations boycott the Women's World Championships last month.
World Boxing aims to replace the IBA's current role in the sport, with a number of national bodies said to have indicated their interest to join the new federation and the membership process will begin in May.
Lorenzo Musetti stunned Novak Djokovic to seal a "dream" victory and a quarter-final spot in the Monte Carlo Masters.
Falling to a 4-6 defeat in the first set, Musetti responded to win 7-5 in the second and 6-4 in the third following a rain delay.
The 21-year-old overcame the world number one in a mammoth two-hour, 54 minute encounter and capitalised on weak serves from the Serbian – breaking his opponent eight times en route to a career high victory.
Emotions were high for Musetti, who said afterwards: "I am struggling not to cry. It is an emotional win because it was a really long match. Three-hour match and suspended by rain.
"It was not easy conditions because it was a little bit windy and cold. Not like we used to play in the recent days. I am really proud of myself and I can see on the screen. I am struggling not to cry because it is a dream for me."
Musetti's reward is a clash with Jannik Sinner in the quarter-finals, who trailed Hubert Hurkacz by a set and a break before rallying to a 3-6 7-6 (8-6) 6-1 triumph – sending him into the last-eight in six of the seven events he has played this season.
Elsewhere, Andrey Rublev earned a 50th tour-level win on clay with a 7-6 (6-4) 6-2 victory over Karen Khachanov, who was his doubles partner earlier this week before the pair suffered elimination against Wesley Koolhof and Neal Skupski.
Rublev will meet German qualifier Jan-Lennard Struff in the next round, who secured a major upset earlier in the day by eliminating world number four Casper Ruud.
A 6-1 7-6 (10-8) victory earned Struff his first top 10 win since June 2021, when he defeated Daniil Medvedev in Halle, and advances to his first ATP Masters 1000 quarter-final since Cincinnati in 2020.
World Rally Championship driver Craig Breen has died aged 33 after he was involved in a pre-event test accident ahead of the Croatia Rally.
The 33-year-old Irishman had been racing this year with Hyundai Motorsport, who confirmed he was involved in an incident on Thursday.
"Hyundai Motorsport sends its sincerest condolences to Craig's family, friends and his many fans," the team said.
Breen's team-mate and co-driver James Fulton was unharmed in the accident, which took place before this weekend's race in Zagreb.
Across a career that saw him debut in 2009, BReen achieved eight podiums, most recently matching his best ever finish with second at the 2023 Rally Sweden.
Tyson Fury has not heard anything from Anthony Joshua over an all-British heavyweight bout, claims the former's promoter George Warren.
A long touted fight between the pair has been on the cards several times over the years, but has failed to materialise for multiple reasons.
Fury was set to face Oleksandr Usyk in a proposed undisputed world title bout later this month, while Joshua defeated Jermaine Franklin earlier this month.
Hope for another round of negotiations with former two-time world champion Joshua had been mooted, but now Warren says no discussions have been had.
"I don't know the answer to that," he told Sky Sports. "The other side spoke a lot about wanting to reach out and contact us after the fight with Franklin.
"We've not heard anything, not had any contact, so there's been nothing to discuss with Tyson.
"They made it quite clear pre-Franklin fight that they wanted to maybe look at that fight for the summer. They thought maybe there was an opportunity.
"I haven't heard from them. I haven't had a phone call, I haven't spoken to anyone about it. You'd have to ask them."
Joshua, who lost twice to Usyk including in a rematch last year in Saudi Arabia, returned to winning ways against American Franklin earlier this month.
However, he has since indicated he will not fight again until December, leaving the rest of the heavyweight division to look for other opponents.
Fury meanwhile has not fought since a trilogy bout victory against Derek Chisora in December.
WTA tournaments will return to China later this year after being suspended since late 2021 due to concerns around the safety of player Peng Shuai.
Peng posted claims on Chinese social media site Weibo in November 2021 that she had been sexually assaulted by the former Chinese vice-premier, Zhang Gaoli, before disappearing from public view and later denying making the allegations in a video interview posted by a Singaporean Chinese-language newspaper.
The situation led to widespread concern for Peng's wellbeing, initiating the #WhereIsPengShuai campaign, with the WTA going as far as suspending Chinese tennis tournaments.
The organisation called on the Chinese authorities to investigate the matter, but has now accepted that those requests "will not be met".
"We've been in this for 16 months and we are convinced that at this point our requests will not be met," chief executive Steve Simon said to BBC Sport.
"To continue with the same strategy doesn't make sense and a different approach is needed. Hopefully, by returning, more progress can be made."
He added: "We've achieved some assurances from people that are close to Peng that she's safe and living with her family in Beijing.
"We do also have some assurances that there won't be any issues with our players and staff while they are competing in China. And hopefully we have received some respect for the stance we took.
"We haven't seen anyone else take a stance such as we did. There hasn't been any other sporting leagues or any business that have. We took that strong stance, we stand behind it."
The final two months of the season will be "very similar" to the pre-pandemic year of 2019, according to Simon, when eight tournaments were played in China from the start of September.
The 10-year deal for the season-ending WTA Finals to be held in Shenzhen will also resume.
Christian Horner says Adrian Newey will by staying at Red Bull for "many years to come" amid speculation over his future.
It has been reported that chief technical officer Newey could leave the Formula One constructors' champions as his contract is up for renewal.
Red Bull team principal Horner dismissed talk that Newey could be on his way out of the team.
"His heart is still very much in Formula One and his commitment to the team is, it's not something…" Horner told Sky Sports News.
"We don't talk about contracts or longevity of contracts, but he'll be here for many years to come.
"There's always going to be rumours in this paddock, that's Formula One."
Horner added: "He's such an important part of our team and popular part of our team.
"It's great to have him with us for the long term, but also to be involved in some of the things we're now getting involved in."
The Pittsburgh Penguins saw their 16-season run of appearances in the playoffs end as the New York Islanders put a halt to the longest such streak in the NHL.
Losing 5-2 to the Chicago Blackhawks on Tuesday took the Penguins' fate out of their own hands, and the Islanders squeezed in as the last team to book a playoffs spot when they beat the Montreal Canadiens 4-2 a day later.
Coach Mike Sullivan's Penguins team have a 40-31-10 record for the season, and they will round off their campaign against the Columbus Blue Jackets on Thursday.
Beau Bennett spent four years on the Pittsburgh team and was a Stanley Cup winner with the Penguins in 2016, the second of three NHL championships the team won during their remarkable 16-year run.
With the team's fate sealed, Bennett wrote on Twitter: "I mean people will probably be negative but think about how sick that run was. Most orgs will be lucky to have that success in 50 years."
Superstar center Sidney Crosby continues to hit the heights, managing 33 goals and 58 assists in 81 games, while Evgeni Malkin and Kris Letang have maintained their own high standards. Pittsburgh's 'Big Three' have famously featured throughout the 16-year run.
It was put to Bennett that the Penguins could have gone on achieving, given their top players continued to perform.
He replied: "True but 16 years of consistency, having 3 of the best players the whole time, interchanging everyone else including coaches and management. Sometimes we take greatness for granted."
Bennett said there had been "definitely some suspect moves", with general manager Ron Hextall's rush of trades before the deadline having come in for scrutiny.
Bringing in the likes of Nick Bonino, Dmitry Kulikov and Mikael Granlund, while moving others out of the franchise, has not had the desired effect.
After those trades, Hextall said: "I think that we made our team better. I think there are a lot of teams capable of winning the Stanley Cup, and we're one."
Not this season.
As Bennett sees it, Pittsburgh's elimination now spares them hurt later along the line.
"Let's be real here," he added, "how far are they getting if they get in? All good things come to an end."
Shai Gilgeous-Alexander believes the Oklahoma City Thunder reaped the rewards of being "battle-tested" as they kept their season alive by beating the New Orleans Pelicans.
The Thunder, the youngest team in the NBA, ended the Pelicans' season with a 123-118 victory at Smoothie King Center on Wednesday.
Oklahoma City's win in the Western Conference play-in tournament ensure they will face a trip to play the Minnesota Timberwolves on Friday, with a place in the NBA playoffs at stake.
A meeting with the number-one seeded Denver Nuggets will be the reward for the team that comes out on top in that showdown.
Gilgeous-Alexander stepped up to deliver 32 points, while Josh Giddey finished with 31 point, 10 assists and nine rebounds for Oklahoma City in that win over the Pelicans.
New Orleans led 69-62 early in the third quarter, but the Thunder stormed back and Gilgeous-Alexander felt the showed their strength of character.
"We've been battle-tested. We've played in a lot of close games all year, for the past couple of years,” Gilgeous-Alexander said.
"Even when the season wasn't going our way, we played in a lot of close games and we have good habits and we know what gets it done down the stretch."
Thunder head coach Mark Daigneault said: "Great 48-minute effort out of the team.
"Great poise. New Orleans made a couple of big runs at the end of the second and then the beginning of the fourth and I thought our guys just had a great temperament in the huddles and got back to our stuff.
"We weren't perfect tonight, but we got back to our habits and it was a great effort out of the team.
Brandon Ingram scored 30 points, 20 of which came in the second half, but the Pelicans were unable to stay in the hunt for the playoffs.
Chicago Bulls head coach Billy Donovan labelled Zach LaVine as "extraordinary" after his 30 second-half points lifted them past the Toronto Raptors 109-105 in their play-in tournament game on Wednesday.
LaVine finished with 39 points as the Bulls advanced to take on the Miami Heat for the right to the eight seed and a playoffs first round series against Eastern Conference top seed Milwaukee Bucks.
The Bulls guard's 30-point second half was the most points he has scored in any half this season, fuelling a fightback after trailing by 19 points.
"What he did going into the third quarter and into the fourth, it would have been very, very difficult for us to have won that game if he had not done that," Donovan said about LaVine.
"His performance was extraordinary. It gave us life and it gave us hope. Then once we got back into it, I think a lot of guys made a lot of different plays.
"But I give him credit, he had that mentality that he's going to do whatever he can do to get us back into the game."
LaVine put his second-half success down to "aggressiveness" and driving to the basket, capitalising on the Raptors trying to double-team DeMar DeRozan, who had 23 points and seven rebounds. DeRozan called LaVine "amazing" and said the Bulls followed his lead.
Meanwhile, the loss ended the Raptors' season, meaning they have missed the playoffs in two of their past three seasons, putting pressure on head coach Nick Nurse to retain his job.
"It was tough," Nurse said reflecting on the 2022-23 season. "I think we had some up and downs. I thought we came out of the gates playing pretty well. Then we had to weather some injuries and we did that and once we got everybody back that got us out of rhythm and took a couple tough losses.
"I've told the guys several times in the last two weeks, I'm proud of them for getting back to .500 when they were six or seven games below .500, because we did coach them hard and work them hard to rebuilding some of the foundational stuff.
"I thought we played well enough to win tonight, it just didn’t go our way."
Nurse lamented his side's 50 per cent free-throw shooting, making 18-of-36, not helped by DeRozan's daughter Diar, who screamed with a shrill every time they had an attempt from the line.
"That's a lot of misses," Nurse said. "We left a lot of points on the board."
DeRozan laughed off his daughter's antics which caught plenty of attention on social media given her persistent nature throughout the game.
"I've just seen it, she went viral," he said. "I kept hearing something during the game and when somebody missed a free-throw I thought 'damn, is that my daughter screaming?' I was just making sure she was alright though."
DeRozan added that Diar would not be able to attend Friday's play-in game on the road against the Heat, instead needing to go back to school.
Zach LaVine scored 30 second-half points as the Chicago Bulls rallied from a 19-point deficit to eliminate the Toronto Raptors 109-105 in Wednesday's play-in tournament game.
The Bulls' victory sees them advance to the final play-in game against the Miami Heat on Friday, with the winner to take the eight seed and a playoffs first round series against the Milwaukee Bucks.
Chicago became the first 10th-place team to win a play-in game, but they did it the hard way, trailing by 16 with 2:42 left in the third quarter.
LaVine starred as they stormed home with a 37-24 fourth quarter, after the Bulls guard added 17 points in the third to cut the margin to nine points at the final change.
LaVine finished with a game-high 39 points on 12-of-22 shooting with six rebounds and three assists, while DeMar DeRozan added 23 points with seven rebounds and two blocks.
Raptors forward Pascal Siakam scored points with nine rebounds and six assists, with Fred VanVleet adding 26 points with seven three-pointers along with 12 rebounds and eight assists. VanVleet's 26 points included a half-time buzzer-beater from half court.
The Raptors were not helped by 50 per cent free-throw shooting, having to endure persistent and timed screams from DeRozan's daughter Diar upon each attempt throughout the game.
After trailing for most of the game, the Bulls went ahead on Patrick Beverley's three-pointer with 5:07 remaining.
Toronto's free-throw woes haunted them when Siakam spurned the chance to square the game up with 12.0 seconds left after Alex Caruso's foul when he missed two of three attempts.
Siakam had made it a one-point game with a driving dunk with 19.1 seconds remaining before the composed LaVine drained two free-throws.
Giddey and SGA lift OKC past Pels
A youthful Oklahoma City Thunder line-up showed maturity to progress past the New Orleans Pelicans 123-118 led by Josh Giddey and Shai Gilgeous-Alexander who rebounded after a quiet first half.
OKC advanced to face the Minnesota Timberwolves in Friday's play-in tournament game with the winner to take on the Denver Nuggets, while the Pelicans' season is over.
Gilgeous-Alexander only had seven first-half points but finished with a game-high 32 on 11-of-22 shooting, making eight-of-eight free-throws including a series down the stretch.
Australian guard Giddey had a near triple-double with 31 points, nine rebounds and 10 assists. Lu Dort added 27 points with four three-pointers.
Brandon Ingram top scored with 30 points, including a three-pointer to make it 119-118 with 4.1 seconds remaining, along with six rebounds and seven assists.
Herb Jones threw an out-of-bounds pass for CJ McCollum when the Pels were set for a three-point attempt to tie the game with 2.8 seconds left, allowing OKC to insure the win from the free-throw line.
OKC became the second 10th-place team to win a play-in game, following on from the Bulls achieving that earlier on Wednesday.
The Tampa Bay Rays claimed a franchise record and moved a step closer to an MLB record with Wednesday's 9-7 win over the Boston Red Sox that extended their season-opening streak to 12 wins.
The Rays improved to 12-0 with the win that included only one home run this time, coming from Randy Arozarena's first-inning opposite field three-run blast.
Taj Bradley fanned eight batters across five innings on his majors debut, allowing five hits, one walk and three runs, before Rafael Devers tightened up the scoreline with a three-run homer in the seventh inning.
But Arozarena's eighth-inning sacrifice fly meant Tampa Bay had done enough to extend their winning streak, meaning they are one short of matching the 13-0 starts by the Milwaukee Brewers (1987) and the Atlanta Braves (1982) which are the longest ever in MLB history.
The Rays matched a franchise record for a winning streak, previously 12 in a row from June 2004.
Tampa Bay have outscored their opponents 92-27 through the first dozen games, blasting 30 homers, which is only bettered by the 2019 Seattle Mariners (32) and the 2000 St Louis Cardinals (31).
Arozarena was struck out twice had four RBIs while Wander Franco went three-for-five with two RBIs and two runs.
Franco's fourth-inning two-run double opened up a 6-1 lead but the Red Sox did well to rally after reliever Zack Kelly left in the fifth with right elbow pain, while Devers snapped a run of 10 hitless at-bats.
The Rays can match the MLB record 13-0 season-opening start when they face the Red Sox again on Thursday.
Yankees win after Boone tossed & ump hospitalised
Aaron Boone was ejected early and Franchy Cordero homered for the fourth time this season as the New York Yankees rallied from a three-run deficit to beat the Cleveland Guardians 4-3.
Yankees manager Boone was tossed in the first inning following a confusing play, while second base umpire Larry Vanover was taken to hospital during the fifth after being struck in the face by a relay throw.
Vanover was struck in a bizarre sequence from Kyle Higashiakoa's RBI single, with the incident allowing Isiah Kiner-Falefa to score after Oswaldo Cabrera had plated.
Cordero tied the game with a 439-feet seventh-inning blast, before Cabrera's ninth-inning go-ahead single. Closer Clay Holmes was nervy, loading the bases on a hit batter, but finished the job.
Bregman finds form as Astros triumph
Alex Bregman homered for the second straight game as the inconsistent Houston Astros thrashed the Pittsburgh Pirates 7-0.
Bregman's three-run blast in the seventh inning opened up a 5-0 lead, after rookie outfielder Corey Julks crushed his maiden homer into left field in the fourth inning.
The Astros rode the pitching of Jose Urquidy who allowed only two hits – both singles - and three walks across six scoreless innings, striking out two.
Russell Westbrook has rubbished the narrative that there is animosity between him and former team-mate Kevin Durant as they prepare to face off in the NBA playoffs first round.
Westbrook and Durant, who played together at Oklahoma City Thunder, will be reunited when the former's Los Angeles Clippers will take on the latter's Phoenix Suns in a clash between the Western Conference's four and five seeds.
The pair were OKC team-mates for eight seasons, forming a strong partnership and competing in the 2012 NBA Finals, before Durant left for the Golden State Warriors in July 2016.
"It will be normal for me," Westbrook told reporters about facing Durant, having faced of 11 times since their split, with Westbrook teams up 6-5.
"I think people still think like there's some beef or something. There's no beef of any [kind], so I think that's the good narrative for media, for people to talk about.
"But there's no beef. I got nothing but respect for him and things he's done with his career and having to see him back from injury.
"There's no beef at all. But he knows I'm going to compete and I know he's going to compete and that's all it is."
Westbrook, who left the Los Angeles Lakers for the Clippers in midseason, was full of praise for Durant, who also made a midseason move from the Brooklyn Nets to the Suns.
"Just his ability - he's always been very efficient," Westbrook said. "But I think his ability to be more efficient and still score the ball at a high rate.
"He's probably one of the best scorers I've seen, just can score at ease and look so effortlessly.
"I think over the years, he's figured out ways to score the basketball at a very, very high rate, and that's kind of what I've seen over the years."
Jake Paul has lined up former UFC man Nate Diaz as his next opponent following his split-decision loss to Tommy Fury.
The former social media personality will face the MMA veteran in an eight-round cruiserweight bout at the American Airlines Center in Dallas on August 5.
Paul, who lost his previously unbeaten status against Fury in Saudi Arabia earlier this year, stands at a 6-1 record with four knockouts.
Diaz, who famously inflicted Conor McGregor to a first loss during his UFC days, is a 21-time winner in MMA but will make his professional boxing debut in Texas.
The pair's fight comes amid an escalating war of words between the two over recent months, and will see Paul sidestep a potential bout with fellow media personality-turned-boxer KSI.
The Briton previously defeated the American's brother Logan in his only professional fight in 2019, but Paul says he desires to test himself further after defeat to Fury.
"My last fight didn't end the way I wanted, but the result was the best thing that could have happened to my professional boxing aspirations," Paul said in a statement.
"Now, the world thinks I am vulnerable, when all I am is more focused than ever. My team wanted me to take an easy fight like KSI next, but that's not how I am built.
"Nate Diaz is considered one of the most bad-ass fighters of all time, but he and his team have been running their mouths for too long."
Diaz likewise threw down the gauntlet, adding: "I'm the king of combat sports. I f***** up Conor for acting out and now here I am again, like a superhero."
Ferrari team principal Frederic Vasseur believes the penalty issued to Red Bull for their cost cap breach was "too light".
The championship leaders were fined $7million and lost 10 per cent of their wind tunnel time after being deemed to have breached the cost cap in 2021, Formula One's inaugural season with the new regulations.
Already having the least time in the wind tunnel due to being crowned champions in 2022, Red Bull's aerodynamic development over the course of the season could be hindered – potentially opening the door for their rivals.
However, Vasseur does not see it that way and believes Red Bull already have a significant enough advantage, rendering the punishment as "marginal" in his eyes.
"The penalty for me was very low," Vasseur said in a recent media call, per ESPN.
"If you consider that basically we will improve a bit less than a second over the season in terms of aero, you get a penalty of 10 percent of this it's one-tenth and as it's not a linear progression it's probably less.
"You are allowed to spend this money somewhere else, so it means for me the penalty is marginal.
"If you consider that you have an advantage at the beginning of the season because you spend more the year before, then the compensation...
"I don't want to say that they didn't do a good job because I think honestly that they did a very good job on the car. I'm not trying to find an excuse at all. It's not this. But if you ask me if the penalty is too light, I say yes."
Christian Horner has responded to George Russell saying Red Bull are "embarrassed to show their full potential" and enjoy a bigger pace gap than has so far appeared to be the case.
Reigning champions Red Bull have dominated the 2023 Formula One season after claiming both pole and the race win in each of the opening three races, including one-twos in Bahrain and Saudi Arabia.
Red Bull have almost double the points of Aston Martin in second in the constructors' championship.
However, at the Australian Grand Prix, Max Verstappen dropped from first to third on lap one, allowing Russell to briefly lead before the Dutchman went on to win the race, while his team-mate Sergio Perez rose to fifth following a pit-lane start.
It prompted Mercedes driver Russell to tell the BBC's Chequered Flag podcast: "For sure, they're holding back.
"I think they almost are embarrassed to show their full potential. I think realistically they probably have seven-tenths [of a second] advantage over the rest of the field.
"I don’t know what the pace difference looks like at the moment, but Max has got no reason to be pushing it, nor [have] Red Bull.
"They've done a really great job, to be fair to them. We can't take that away, and we clearly have to up our game."
When Horner was told about the remarks, he made reference to Mercedes' past dominance of winning eight consecutive constructors' titles before Red Bull ended that run in 2022.
"Okay, that's very generous of him," Horner replied. "His team of all people would know too well about those kind of advantages."
Asked if Russell's comments were true, Horner explained both of his drivers were managing their pace in Melbourne given the intended one-stop strategy before the safety car and red flag dramas.
"There's always an element of managing what goes on in any race," he said. "Because it was a one-stop race and a very early one-stop race, of course there was an element of tyre management which was going on, which was what they were doing.
"[But] Checo wasn't hanging about; he wasn’t cruising around, holding back seven-tenths per lap because he didn't want to show it – the grid was certainly a little bit closer at this venue."
Back-to-back world champion Verstappen leads the drivers' standings by 15 points ahead of Perez, with the season's fourth round on April 30 in Azerbaijan.
Daniil Medvedev marched past Lorenzo Sonego at the Monte Carlo Masters to secure a tour-leading 30th win of the 2023 season.
The third seed overcame the Italian 6-3 6-2 to clinch a spot in the round of 16 alongside compatriots Andrey Rublev and Karen Khachanov – marking just the third time in the Open Era that three Russians have reached that stage at Monte Carlo.
Medvedev will face Alexander Zverev, who clinched his spot with a 6-4 6-4 victory over Roberto Bautista Agut earlier in the day, in the next round.
"We've had some tough matches. We played for the first time maybe seven years ago on the ATP Tour, and in juniors maybe 12 years ago," Medvedev said of Zverev.
"I remember I beat him once in a final on clay in juniors, but it’s going to be a different story.
"I saw him in the first two matches, he seemed to be in good shape. I'm just going to have to be at my best."
Elsewhere, Jannik Sinner claimed a 6-0 3-1 victory over Diego Schwartzman, who retired in the second set, to take his total of wins in 2023 to 22, with only Medvedev having more.
There was also a win for Taylor Fritz, who overcame Stan Wawrinka 7-6 (12-10) 6-2, while qualifier Jan-Lennard Struff registered an upset with a 6-3 6-2 victory over Alex de Minaur.
The Boston Bruins have "much bigger goals" in the Stanley Cup playoffs than a record-breaking NHL regular season.
Boston set a new high for single-season wins with their 63rd against the Philadelphia Flyers over the weekend, and they made yet more history with win 64 on Tuesday.
A 5-2 defeat of the Washington Capitals took the Bruins to 133 points for the season, clear of the Montreal Canadiens' 1976-77 benchmark of 132.
But postseason success is the primary goal for the Bruins. Since winning their sixth Stanley Cup in 2011, this is their third Presidents' Trophy.
That Canadiens team, widely considered the greatest of all time, followed up their regular season by winning the title.
Winger Brad Marchand said: "We have a very special group. It's incredible how we've come together this year.
"We've done a phenomenal job all year of staying in the moment.
"We're proud of the group, but this is a regular-season record. That's not what we're playing for. We have our sights set on much bigger goals.
"I think it [the record] is something we'll look at down the road when we're daydreaming about what we got to do and what we've accomplished."
Boston coach Jim Montgomery was a little more open to discussing the team's latest achievement, recalling the quality of the 1977 Canadiens.
"I think of all the Hall of Famers on those teams and then Scotty Bowman behind the bench and going to the old Montreal Forum," he said.
"Think about how great those teams were and how we've surpassed that total. It's significant because those were dominant, dominant hockey teams."
SportsMax is the Caribbean sports channel of choice, committed to providing sporting content of the highest quality to the Caribbean, delivered by a team of highly innovative, passionate and qualified professionals.
(876) 619-7629
digitalmedia@sportsmax.tv
