The Australian Open is the year’s first Grand Slam tennis tournament.

Hall of Fame tennis coach Nick Bollettieri has died at the age of 91.

Novak Djokovic is 26-0 in Grand Slam matches in 2021.

Novak Djokovic has picked up his 17th consecutive victory over Kei Nishikori to reach the fourth round at the U.S. Open as he pursues a calendar-year Grand Slam.

Emma Raducanu continues to roll at the U.S. Open, using a straight-sets victory to advance to the fourth round.

Kei Nishikori is the next man standing between Novak Djokovic and the completion of a calendar-year Grand Slam at the U.S. Open.

Novak Djokovic will begin his bid to win the U.S. Open for a men’s-record 21st major tennis championship and to complete a calendar-year Grand Slam by facing a player who comes through qualifying.

How well do you know the U.S. Open tennis tournament.

Mackie McDonald has eliminated 2015 champion Kei Nishikori in three sets at the Citi Open to reach the first ATP final of his career.

Jenson Brooksby has beaten 11th-seeded John Millman 6-1, 6-2 to reach the semifinals of the Citi Open in his debut appearance at an ATP 500 event.

There will be a female chair umpire for the Wimbledon men’s singles final for the first time in the history of a tournament first played in 1877.

Naomi Osaka was going to be at the center of attention during the Tokyo Olympics no matter what.

Nick Kyrgios is back on the tennis scene and back to winning at Wimbledon.

Serena Williams has lost in straight sets in the fourth round of the French Open.

Alexander Zverev has reached his third French Open quarterfinal by eliminating Kei Nishikori 6-4, 6-1, 6-1.

Kei Nishikori went five sets again to win at the French Open.

Italian tennis player Simone Bolelli, left, and Argentina's Maximo Gonzalez are escorted to their training session in Melbourne, Australia, Monday, Jan. 18, 2021. The number of players in hard quarantine swelled to 72 ahead of the Australian Open after a fifth positive coronavirus test was returned from the charter flights bringing players, coaches, officials and media to Melbourne for the season-opening tennis major. Some players have expressed anger at being classified as close contacts merely for being on board those flights with people who later tested positive. But local government, tennis and health authorities have said all players were warned of the risks in advance. The Australian Open starts Feb. 8 following a week of warmup tournaments at Melbourne Park and the ATP Cup.

(AP Photo/Alessandra Tarantino)PARIS – The Latest from the French Open (all times local):___9:35 p.m.American teenager Coco Gauff’s French Open debut has ended in the second round after she double-faulted 19 times in a 4-6, 6-2, 7-5 loss to 159th-ranked qualifier Martina Trevisan. Stefano Travaglia beat the Japanese player 6-4, 2-6, 7-6 (7), 4-6, 6-2 in the second round of the French Open after nearly four hours. 2-seeded Spaniard is looking to win his record-extending 13th French Open title and equal Roger Federer’s men’s record of 20 major titles overall. ___2:55 p.m.U.S. Open runner-up Victoria Azarenka is out of the French Open in the second round. They said it was "a fighter plane which has broken the sound barrier.”___12 p.m.Serena Williams is out of the French Open.

The French Open is the only Grand Slam tournament that does not use tiebreakers in the final set. 9 seed Johanna Konta 6-3, 6-3 at Court Suzanne Lenglen on Sunday. ___7:30 p.m.Stan Wawrinka made quick work of Andy Murray in their reunion of sorts at the French Open. One of his coaches is Wolfgang Thiem, the father of fellow Austrian Dominic Thiem — the U.S. Open champion, and French Open runner-up the past two years. The 20-year-old Korda beat Andreas Seppi of Italy 6-2, 4-6, 6-3, 6-3.

If Roger Federer and Rafael Nadal win their quarterfinals Wednesday, they would clash at Wimbledon for the first time since the 2008 final, considered by many to be the greatest tennis match ever. But if you think Federer and Nadal are guaranteed to meet again Friday, consider this: Kei Nishikori and Sam Querrey, who face the Swiss and Spaniard, respectively, won the last duels in those matchups. "I feel like I am very confident this week, playing good tennis," said world No. The winner plays either Roberto Bautista Agut or maiden grand slam quarterfinalist Guido Pella. The hope for most tennis fans is that Federer and Nadal line up on opposite sides of the net Friday.