Arizona Cardinals star defensive end JJ Watt has announced his football career is ending.

Watt posted to Twitter on Monday that Sunday's loss to the Tampa Bay Buccaneers was the first NFL game his son attended but also his final NFL home game.

"Koa's first ever NFL game," Watt wrote. "My last ever NFL home game."

Already eliminated from the playoffs, the Cardinals play their final two games on the road – at the Atlanta Falcons this Sunday and at the San Francisco 49ers in Week 18.

"My heart is filled with nothing but love and gratitude," Watt wrote. "It's been an absolute honour and a pleasure."

One of the NFL's most feared pass-rushers early in his career, the 33-year-old Watt battled through injuries in the past few seasons and revealed in October he was playing through a case of atrial fibrillation.

A first-round pick by the Houston Texans in 2011, Watt is a three-time Defensive Player of the Year, a five-time first-team All-Pro and five-time Pro Bowl selection.

The future Hall of Famer led the league in sacks in 2012 and 2015, and his 111.5 career sacks rank fourth among active players. His 9.5 sacks this season are his most since recording 16 in 2018.

Brooklyn Nets coach Jacque Vaughn feels his side's focus on court matters alone is key to their form, after Kevin Durant and Kyrie Irving set up a ninth win in a row.

The pair posted 32 points each in a remarkable double act to ensuring a 125-117 win over the Cleveland Cavaliers on Monday, which gave the Nets their longest winning streak since 2006.

It marks a sharp contrast from the early season blues the Nets suffered from, with Irving banned for a post that supported anti-semitism and prior head coach Steve Nash dismissed amid poor form.

Vaughn credits the turnaround to keeping his players tightly trained on their performances rather than matters away from the court, indicating that discipline has been the secret of the success.

"I am a simple person," he said. "[I] really try to keep things simple. We stripped our playbook down a little bit, we are simple in what we do.

"[We] have our guys play extremely free of mind. I think there's something important in that if you're going to ask your guys to play hard."

Durant concurred with his coach's assessment, noting the Nets feel like they are in a better headspace under Vaughn's command, while suggesting outside forces were played up in the media.

"To be honest, I think we've always been about ball," he added. "Everybody has a platform, so there are many voices speaking [about] what we do inside our locker room

"I think that's the noise that you hear. But from us, we've always been about the game. We struggled early on, we were always focused on playing basketball."

David Warner can continue in Test cricket for "as long as he wants", believes Australia team-mate Steve Smith after the batsman's double century against South Africa.

Amid speculation over Warner's future in the red-ball team, the New South Wales veteran became the eighth man to cross the 8,000-run boundary for his country in the game's oldest format.

After a slew of lacklustre performances, the 36-year-old's first Test century since facing New Zealand in 2020 reaffirmed his credentials, and Warner was only halted when he was forced to retire on 200 with cramp.

Smith, the seventh man to reach the 8,000-run mark, was full of plaudits for his partner at the crease, after they piled on the runs against the Proteas in Melbourne, and feels he is still in his prime.

"I don't see any reason why he can't continue playing," Smith said. "He saw the ball well today. He can play as long as he wants.

"He played exceptionally well from ball one yesterday. He looks like he has a lot of energy, his feet moved really nicely.

"Today, he just played beautifully. I think the more he started to cramp, the more shots he started playing. Everything came from the middle."

Australia finished day two at the MCG on 386 for three, with Warner and Cameron Green both retiring hurt. Smith was the last batsman dismissed, having shared in a partnership of 239 for the third wicket with Warner, before the retirements made it an unusual end to the day's play.

The batting efforts gave Australia an overnight lead of 197 runs, with Warner chiefly responsible.

"It was a great blow [to lose him] but nice to be on the other side for much of it," Smith said. "He's doing fine, he's fit. It was quite energy consuming.

"Obviously, it was a strange end to the day. It was hard to believe I was the last wicket. It was an interesting finish but a good day."

San Francisco 49ers head coach Kyle Shanahan has not thought about how the team will handle their quarterback situation in 2023 following rookie Brock Purdy's stunning emergence.

The Niners claimed their eighth straight win on Christmas Eve as they eased to a 37-20 victory over the Washington Commanders to improve to 11-4 on the season.

Purdy, the last pick in this year's draft, has been the starting quarterback for the last three games, having come in and replaced Jimmy Garoppolo following his injury in the first quarter of the Week 13 win over the Miami Dolphins.

Since quarterback starts were first tracked in 1950, Purdy is only the second player to begin his career 3-0 as a starter while throwing multiple touchdown passes in each game. The other is Kurt Warner, who did so in 1999 after stepping in for the injured Trent Green and went on to lead the St. Louis Rams to victory in Super Bowl XXXIV.

The 49ers and Purdy have ambitions on lifting the Lombardi Trophy at the end of this campaign, and it is that goal Shanahan is entirely focused on, not a quarterback decision that figures to be one of the dominant storylines of the offseason.

Garoppolo will become a free agent at the start of the 2023 league year in March, leaving Purdy and Trey Lance — who was the 49ers’ starter before suffering a season-ending ankle injury in Week 2 — as the two quarterbacks on the roster.

San Francisco traded three first-round picks for the right to acquire Lance with the third overall selection in 2021, but he has started only four games in two seasons and it may be difficult to demote Purdy from the starting role if he continues to thrive and the 49ers enjoy a deep playoff run.

But asked if he had thought about how he will approach the quarterback issue in the offseason, Shanahan told reporters on Monday: "No, I didn't even know what year it is after this season is over, so I'm trying to think about how to get him ready for Wednesday [practice].

"That's a great question, but honestly, I don't look ahead like that. We have a number of big games in front of us."

Purdy averaged 10.64 yards per pass attempt in throwing for 234 yards, two touchdowns and an interception against Washington despite still dealing with an oblique injury.

Assessing Purdy's display, Shanahan said: "I thought Brock played well, really well. He was smart with the ball.

"There were a couple situations that were tight, where there was an unblocked player and the play was almost there and I thought he just did a great job not doing anything stupid in some tough situations also.

"He's shown that he's willing to let a rip at all times and there were a couple times in the game that they got an unblocked guy right to him and he made a couple great decisions just to take the sack, so I was really impressed with how Brock played just talking to him here the last two days.

"He got out healthy again and I think that should continue healing up and I think he should be even a little better this week with more health."

Christophe Galtier insists there is no risk involved in throwing his World Cup stars straight back into Ligue 1 action.

The likes of Neymar, Kylian Mbappe and Achraf Hakimi are poised to face Strasbourg on Wednesday as the French top flight cranks into gear once more.

A six-week break for domestic duty has seen PSG's star names experience the roller coaster emotions and intense scrutiny of national team duty at the highest level.

Hakimi helped Morocco make history by becoming Africa's first semi-finalists, while Neymar had an injury-plagued campaign that ended with Brazil's defeat on penalties to Croatia in the quarter-finals.

Mbappe then experienced the cruellest of fates when he became just the second man to hit a hat-trick in a World Cup final, only to finish as a runner-up after France's spot-kicks loss to Argentina.

Ten days will have passed since that loss at Lusail Stadium when Mbappe steps out to face lowly domestic rivals, and Galtier said: "I don't think there is a risk.

"They wanted to get to play in these very important league games. Of course, we will need to manage things in the coming weeks to see how Achraf Hakimi and Kylian Mbappe cope.

"We are thinking about that and we will need to find the fight time for them to rest."

That rest is likely to come sooner rather than later, given PSG have Champions League commitments from February, but for now Galtier believes his players are reliable judges of their readiness to play.

Head coach Galtier saw PSG pull five points clear of second-placed Lens before the World Cup, and with a trip to Stade Bollaert-Delelis coming up on Sunday, the Strasbourg game might be seen by outsiders as a soft landing before the first big test arrives.

Galtier sees it as nothing of the sort, warning the 19th-placed visitors are "playing for their lives" and suggesting PSG's previous form counts for nothing.

Strasbourg have won just one of 15 league games to date this season, while unbeaten PSG have 41 points from the same number of matches.

Strasbourg also have the highest expected goals against total in Ligue 1 this season (28.52 xGA), signalling their opponents have been able to create a high number of good goalscoring chances, while PSG have the lowest (15.06 xGA) and have shipped just nine goals.

PSG are unbeaten in 31 home games against Strasbourg in Ligue 1 (W24 D7), too, the longest such streak against a specific opponent by a Ligue 1 team without ever losing.

On paper, therefore, there is little for Strasbourg to cling to. PSG have not lost at home in their past 36 home games spanning all competitions (W30 D6), since losing to Manchester City in the Champions League in April of last year.

Perhaps the only saving grace for the team from Alsace is they will not have to face World Cup winner Lionel Messi, who has been granted an extended break by PSG.

Galtier knows anything less than three points would be a disappointment, which is why he is preparing the team with the utmost seriousness and backing them to respond.

"If you just focus on the table that would be a big mistake," Galtier said.

"We are starting from scratch. That is what I said to my players. We had a very good start to the season and we know why that was. The players a had a serious approach. They were demanding. They showed determination and humility.

"They want to achieve something together and all of us need to be in the same mindset tomorrow come kick-off."

Lionel Messi will not return to Paris Saint-Germain until early January, but Kylian Mbappe is set for an immediate return to Ligue 1 action against Strasbourg on Wednesday.

Head coach Christophe Galtier revealed Messi will miss the Strasbourg game, and Sunday's trip to Lens, after being given dispensation to stay in Argentina for an extended post-World Cup break.

Messi headed home after Argentina's Qatar 2022 triumph, to be feted for his leading role in the team's triumph after their dramatic win on penalties against France in the December 18 final.

Mbappe, who hit a hat-trick for France in that game but still finished as a runner-up, has returned to full training with the capital club and looks set to line up at the Parc des Princes against Strasbourg, with Brazil's Neymar and Marquinhos and Morocco's Achraf Hakimi also available after rejoining Galtier's group.

Galtier said: "There are individual cases with the players who went very far. Achraf Hakimi played in every game at the World Cup for Morocco. He was in the team of the World Cup.

"He wanted to get back as quickly as possible, as did Kylian Mbappe. He also turned in some brilliant performances and was the top goalscorer at the World Cup.

"After speaking to him and all my different teams who stayed in regular contact with the players, Kylian Mbappe wanted to join back up with us pretty quickly.

"There could be a time when Achraf Hakimi and Kylian Mbappe need to rest. Not necessarily physically, but definitely mentally.

"As for Leo Messi, who had a brilliant tournament, given they won the competition, he went back to Argentina for the celebrations. We made the decision to give him until January 1, so he will be back here with us on the second or third to get back into the swing of things after 13 or 14 days off."

Reports have claimed Messi, who scored seven goals and won the World Cup's Golden Ball prize, has agreed a contract extension with PSG, who will be hoping to get that deal completed soon after his return to France.

An ankle blow for Neymar during the World Cup is no longer troubling the former Barcelona forward, Galtier said.

He returned to France on December 22, and Galtier said: "He has been working outside as normal without any restrictions. Physically he is fine, and mentally he is looking forward to playing."

The PSG boss dismissed any suggestion of a possible problem emerging between Messi and Mbappe, after Argentina's post-final celebrations in the dressing room saw goalkeeper Emiliano Martinez mock the PSG and France striker.

Galtier suggested all the blame for that episode was with Martinez.

"What happened in the celebrations belongs to the Argentinians, and it is not down to me. What matters to me is what I saw in the final and on the sidelines I saw Kylian Mbappe and Lionel Messi embrace," Galtier said.

"There is a lot of respect between them. They have an exemplary attitude after the games. And of course, [Messi] needs to be congratulated for the trophies, and the Argentina coach as well.

"So I would focus on the relationship between them. It wasn't Leo Messi winding anybody else up. What I saw after the final, what I have experienced, is there is no reason to mix these things up because the goalkeeper's behaviour is down to him.

"What matters to me is the relationship between the players. Kylian Mbappe had a very good attitude, despite losing. Of course he was very disappointed, but he did that in a classy way. He congratulated Leo Messi and that is a very good thing for the club and for the team."

For the players who returned from the World Cup disheartened, Galtier says throwing themselves back into club duty has been a welcome escape.

"When they came back, our medical and coaching teams have spoken to the players to understand how they are feeling, because they are top-level footballers who enjoy playing and training to be able to play," Galtier said.

"There is no better remedy than to go back to your club where there is a very good atmosphere, a good feeling. Everyone is showing their commitment based on the training sessions I've been involved with."

Lionel Scaloni has no intention of stepping down as head coach after guiding Argentina to World Cup glory, says Argentine Football Association (AFA) president Claudio Tapia.

Argentina defeated France 4-2 on penalties in a thrilling Qatar 2022 final that finished 3-3 after extra time to add to the Copa America crown won last year.

With his team's latest success, Scaloni became just the third manager in history to win both competitions, after former Brazil bosses Mario Zagallo and Carlos Alberto Parreira.

The 44-year-old is due to be out of contract later this week and has been tipped to take on a high-profile position at club level, but Tapia does not see that happening.

"I have no doubt he will continue to be the head coach of the Argentina team," AFA chief Tapia told reporters.

"We are both men of our word. We shook hands and we said yes to each other. He is currently travelling but as soon as he comes back we are going to finalise it."

Scaloni has been in charge since July 2018, initially on a caretaker basis, and also won the inaugural Finalissima earlier this year with victory over European champions Italy.

However, the decision to appoint Scaloni as Jorge Sampaoli's successor after defeat to France in the last 16 of Russia 2018 was not a unanimous one.

"Ninety-nine per cent of people thought we were wrong or even crazy," Tapia said. "But this team brought happiness to the people with the three titles they won."

Mikel Arteta believes it was the "right moment" for Arsene Wenger to make his long-awaited return to Arsenal on Boxing Day.

The legendary Gunners manager was in attendance for the 3-1 victory over West Ham, where the north London side returned to Premier League action in style to clinch a fourth consecutive league win.

Wenger's return to Emirates Stadium was significant as it was his first trip to the club since leaving in 2018, which brought an end to a 22-year tenure.

While he endured a frosty reception from the fans in the latter stages of his spell at the club, Wenger was serenaded by the Arsenal faithful during the comeback victory, where second-half goals from Bukayo Saka, Gabriel Martinelli and Eddie Nketiah clinched all three points.

Though it has taken time for Wenger to return to his former hunting ground, Arteta believes Monday's match came at the ideal time.

"Winning, my mood is going to be much better talking to him and to be around the team," he told reporters.

"He picked the right moment, a really special day because Boxing Day is a beautiful day to play football and I thought today the levels were what he deserved and hopefully he'll like.

"The players didn't know [about it]. We wanted to keep it quiet and allow that space for Arsene. Stan and Josh [Kroenke] are here as well and it was a really special day.

"Thank you so much to him for coming. Hopefully walking through the building he's going to feel everything that everybody thinks of him, the legacy he left here.

"He is very, very attached to this football club. Thank you to him for everything he did at the club.

"Hopefully he's going to leave here and be willing to spend more time with us and be more around us because he's such a big influence for me personally in my career, the way I see the game, but as well for this football club."

Arsenal round off 2022 with a trip to Brighton and Hove Albion on Saturday, then begin the new year three days later at home against Newcastle United.

Tom Brady will take his time when considering retirement, after the Tampa Bay Buccaneers quarterback's very brief exit prior to the 2022 season.

The 45-year-old announced his retirement from the NFL in February before a dramatic U-turn just forty days later.

With just two games remaining of the regular season – though the Buccaneers lead the NFC South and can clinch the division title with victory against the Jacksonville Jaguars – retirement questions are once again orientating around the seven-time Super Bowl champion.

Set to become a free agent at the end of this season, Brady's future remains up in the air but he has learned not to rush into a decision after this year's experience.

"Well, I think next time I decide to retire, that's it for me. So, whenever that day comes, we'll figure it out," he told the Let's Go! Podcast.

"You know, I think what I really realised last year was you gotta be really sure to do that [announce retirement].

"And for me, you know, a lot of people have kind of gone through this situation. I'm going to take my time whenever that time does come."

Should he continue, Brady could decide to remain with the Buccaneers or may choose a new team for the twilight years of his career, with an array of teams having been touted as potential destinations.

Los Angeles Chargers head coach Brandon Staley has hailed his side for clinching a playoff berth but made it clear it is "just the beginning" for the team.

A first playoff spot for the Chargers since 2018 was clinched with a 20-3 victory against the Indianapolis Colts on Monday, marking only the second venture into the postseason since the franchise returned to Los Angeles from San Diego.

However, Staley has his sights set on more significant goals as he looks to steer the Chargers all the way to Super Bowl glory – something that has evaded the franchise in their history, having made only one appearance in 1994 when they suffered defeat against the San Francisco 49ers.

"It's just the beginning; this is not our final goal," he told reporters.

"I'm really proud of how this season has gone for our football team and what we've been able to demonstrate to make it into the postseason. That's what I'm most proud of, not that we did it but how we made it, what it took for us to get in, but this is just the beginning for us.

"The reason why we're here is because of the men on our football team. We've got the make-up to withstand the type of season that we've had. We wouldn't be here today if it wasn't for the toughness of our football team.

"For far too long, people have talked about the talent and organisation but that's ultimately not what gets you where you want to go. You have to prove your toughness, and that's what we've proven so far this year.

"Our season is not over. We have two more games against really good teams and we need to play our best football so we not only get into the playoffs but so that we can make a run to a Super Bowl championship, which is what we want."

The Chargers' playoff berth is the first of Justin Herbert's career and, while he was proud of the achievement, he backed the defense for their performance and believes there is more to come from his side of the team.

"We've dealt with our fair share of adversity. The story of the day was the defense, stepping up and getting those stops in. There's plenty of room for improvement with our offense but it's a good sign of things to come," he said after the game.

"Some games that didn't go our way last year, but we were able to learn from that and fix it. I think the guys in the locker room deserve that. They've worked so hard and earned it. I think the Chargers operation have done a great job in the past few years."

Graham Potter says Reece James is "in a good place" again after the "brutal" experience of missing England's World Cup campaign.

Full-back James was left out of Gareth Southgate's 26-man squad for Qatar 2022, where England lost to France in the quarter-finals, due to a knee injury.

The 23-year-old has not played since sustaining the injury against Milan on October 11, but he returned to training at the start of December.

Potter acknowledged it has been a difficult period for James, who is set to feature against Bournemouth on Tuesday as Chelsea make their return to Premier League action.

"It was a World Cup and they come around every four years. So when you’re young, the perspective is not so easy to get," Potter said.

"You are young and you want to play. That's really understandable. It's the same for Reece, Ben Chilwell, N'Golo Kante. It's brutal really to have to deal with.

"You can try to help them and give them a bit of perspective but in the end it has to come from them, their families and those people close to them.

"I have to say he is in a good mood, he is in a good place. He has trained with us, is training well and is a good team-mate. He has dealt with it well.

"There is not too much you can say. You say it will get better with time and you have to focus on the things you can control. 

"There is nothing you can say to a player that will make it get better. All I can do is acknowledge it is upsetting, that whatever he is feeling is normal and help him move forwards.

"It was a challenging period for all the players. There were another 12 that are watching their team-mates and getting injured and missing the World Cup. 

"You have to think on some level there is an effect there. They're only human."

Potter confirmed he will continue to monitor James' playing time, though Wesley Fofana and Chilwell remain absent, while key midfield man Kante is out until February.

James has started half of Chelsea's 20 Premier League and Champions League games this season, with his absence from the side coinciding with a downturn in results.

"He's been training for a few weeks now and that helps," Potter added. "The tough time is when you can't play football because you're injured.

"For him, the best thing is that he is playing football and the World Cup is finished now and he can concentrate on playing football.

"He was in a really good place before he got injured. If you look at how the team was functioning before he got injured and after. 

"It's not the only reason of course but Reece is a top, top player and when he is not with us it's a miss. 

"I'm confident the more football he plays the more we will see what a fantastic footballer he really is."

Dwayne Casey felt his Detroit Pistons side "threw in the towel" as they squandered a 14-point deficit in the final three minutes to lose 142-131 to the Los Angeles Clippers.

The NBA-worst Pistons were on course for just a ninth win in 36 games this season until the Clippers rallied in Monday's contest at Little Caesars Arena.

Paul George scored 32 in the Clippers' overtime triumph, with Terance Mann hitting a tying jumper with five seconds left in regulation to deny the Pistons.

"We were down 15 points in the third quarter, fought our way back, got the lead and had a comfortable lead with three minutes left," Pistons coach Casey said. 

"They threw in the towel. We must learn how to win that game. I'm proud of the way we put ourselves in a position to beat one of the best teams in the West, but we didn't get it."

Clippers coach Tyronn Lue took action with his side 126-112 down by pulling his starters.

A line-up of Luke Kennard, Amir Coffey, Nicolas Batum, Moses Brown and Mann finished the fourth quarter with a 16-2 run in an unlikely turnaround.

"You have to give those guys credit for staying ready," Lue said. "They came out and played with some urgency. 

"Amir and Moses hadn't played in the game, so for them to come in and produce like the way they did was huge."

The Clippers had lost their previous 417 games in which they had trailed by 14 points or more with three minutes remaining prior to Monday's comeback against the Pistons.

Isaiah Stewart, who scored 21 points, says the blame is on the Pistons' players rather than the coaching staff.

"They took their starters out, and we thought the game was over," he said. "We had the lead and we didn't finish the game. That's completely on us, not the coaches."

The Clippers (20-15) are fourth in the Western Conference, while the Pistons (8-28) are bottom of the East.