Carlos Alcaraz has announced his withdrawal from Wimbledon due to a right wrist injury, also sidelining him from the Queen's Club Championships.
Jannik Sinner has decided not to take part in this year's Davis Cup Finals with reigning champions Italy confirming his absence in Monday's team announcement, while world number one Carlos Alcaraz will represent Spain at next month's competition.
Jannik Sinner began his bid to retain the ATP Finals title with a resounding 7-5, 6-1 win over injury-hit Canadian Felix Auger-Aliassime in their round-robin clash.
Daniil Medvedev played down his Indian Wells semi-final win over Carlos Alcaraz, saying the Spaniard and Jannik Sinner remain on a different level from the rest of the ATP Tour.
Sinner will face 19-year-old Learner Tien for the title.
Novak Djokovic said he had always believed he could still play at the top level of tennis and rounded on those who had tried to usher him into retirement after beating Jannik Sinner in the semifinals of the Australian Open on Friday.
Novak Djokovic said the shortness and timing of Jannik Sinner's ban this year for an inadvertent doping violation was "odd" and the case would hang over the four-time Grand Slam champion like a cloud for the rest of his career.
Defending champion Jannik Sinner stormed to a 7-5, 6-2 victory over Alex de Minaur in the last four of the ATP Finals on Saturday, as the Australian suffered his 13th straight loss to the four-time Grand Slam winner despite a fighting start.
Jannik Sinner was in ominous form on the Rod Laver Arena court he has ruled for two years before the match was cut short.
World number one Carlos Alcaraz eased to a 6-2, 6-4 win over Canada's Felix Auger-Aliassime at the ATP Finals on Saturday to set up a highly-anticipated title decider with defending champion Jannik Sinner.
Jannik Sinner defeated Carlos Alcaraz in a high-octane final to claim his maiden Wimbledon trophy and fourth Grand Slam crown on Sunday.
Jannik Sinner and Carlos Alcaraz are poised to reignite their rivalry at the ATP Finals, with the year-ending championship that begins on Sunday expected to produce another title showdown between the pair in a season that has belonged to them.
In his first Wimbledon final the 23-year-old Sinner will face Spain's Carlos Alcaraz in a mouth-watering repeat of their recent French Open humdinger which the Italian lost after battling for more than five hours, squandering three championship points.
Canada's Felix Auger-Aliassime reached the last four of the ATP Finals with a 6-4, 7-6(4) round-robin win over two-times winner Alexander Zverev on Friday and Jannik Sinner extended his indoor hardcourt unbeaten run by beating American Ben Shelton.
Defending champion Jannik Sinner defeated Daniel Altmaier to avenge a loss two years ago at the French Open as he marched into the third round of the Shanghai Masters with a 6-3, 6-3 victory over the German.
Sinner, who was also serenaded with "Happy Birthday" by the crowd, was grateful and slightly bemused by the gift.
Shelton was broken in the opening and closing games of the first set, unable to take advantage of a break point at 2-1 down while Sinner was always capable of pulling out an ace at the crucial time, hitting two in that fourth game to hold serve.
Sinner's coach Darren Cahill said the Australian Open and Wimbledon champion was suffering from a virus.
Carlos Alcaraz won the Cincinnati Open after top seed Jannik Sinner retired while trailing 5-0 in the first set of their final on Monday.
While off-court battles over pay and governance rumbled on, opportunities were scarce beyond the duopoly at the top of the men's game, leaving Djokovic to provide the year's standout moments for the chasing pack.
Sinner has a perfect 10-0 record against de Minaur, and he is currently number two in the ATP Live Race to Turin, having qualified for the season-ending ATP Finals. Sinner has reached the last four in seven out of his previous eight tournaments this year.
A clash of nerves, brilliance, and next-gen firepower-Alcaraz showed once again he's made for the biggest stages. As the tennis world erupted, legends led the tributes.
Jannik Sinner navigated mild turbulence for a winning return to Grand Slam tennis as the world number one launched his hunt for a maiden French Open trophy.
Jannik Sinner swats aside Giron to reach Australian Open fourth round
Carlos Alcaraz proved a class above defending champion Jannik Sinner to win the men's singles title at the US Open with a 6-2, 3-6, 6-1, 6-4 victory at the Arthur Ashe stadium, in New York, on Sunday.
Jannik Sinner beat Felix Auger-Aliassime to win the Paris Masters for the first time on Sunday.
Blockx converts late Madrid call-up into breakthrough semi-final run even as Zeverev joins Federer, Nadal in elite list.
Sinner's retirement and world number one Alcaraz's withdrawal due to an ankle injury blows the draw wide open, with Djokovic in the hunt for a record-extending fifth title in Shanghai.
Novak Djokovic said he sees no reason to retire from tennis given that he is still motivated to compete and capable of beating the best players in the world.
Sinner parted ways with Ferrara and physiotherapist Giacomo Naldi last year following the investigation into his positive tests for banned substance clostebol.
Top seed Jannik Sinner continued his serene French Open progress with a 6-1, 6-3, 6-4 dismantling of Russian Andrey Rublev to reach the quarter-finals in ominous fashion on Monday.
Carlos Alcaraz beat his great rival Jannik Sinner 7-5, 7-6(8) to win their Hyundai Card Super Match exhibition event in Incheon, South Korea, on Saturday that marked the start of the season for the world's top two men's tennis players.
Two-time Olympic medallist Neeraj Chopra added another sporting experience to his name on Sunday
Top tennis players, including Jannik Sinner, Aryna Sabalenka, and Coco Gauff, are threatening to boycott the French Open due to dissatisfaction with the current prize money distribution, claiming a lack of respect and a decreasing share of tournament revenue.
Carlos Alcaraz is awaiting the results of tests on his injured wrist before deciding whether he can defend his French Open title next month.
Carlos Alcaraz said he could hold his head high despite being unseated from his Wimbledon throne by Jannik Sinner on Sunday and the Spaniard praised their hot rivalry for being several notches higher than the others on the men's tour.
The World No 1, who extended his hardcourt winning streak to 26 matches, will play against Canada's Felix Auger-Aliassime in the semi-finals.
While Jannik Sinner and French Open champion Carlos Alcaraz have won the last seven major titles between them, the Italian cautioned against complacency and pointed to the strength of competition in the ATP Tour.
Carlos Alcaraz fought back from the brink to outlast top seed Jannik Sinner 4-6, 6-7(4), 6-4, 7-6(3), 7-6(10-2) in a French Open final for the ages on Sunday to retain his crown and cement his status as the Prince of Clay in Roland Garros' post-Rafa Nadal era.
The opening Grand Slam of the year begins at Melbourne Park on Sunday.