Four-time Grand Slam champion Naomi Osaka, wiping away tears after a stunning US Open upset loss on Friday, said she will take an indefinite break from playing tennis.

Fearless Carlos Alcaraz was not distracted by another mid-match bathroom break from Stefanos Tsitsipas on Friday, holding focus to upset the Greek third seed 6-3 4-6 7-6 (2) 0-6 7-6 (5) and advance to the fourth round of the U.S. Open.

Novak Djokovic's bid for a 21st major title that would complete a calendar-year Grand Slam picked up pace on Thursday as the world number one cruised into the U.S. Open third round with a 6-2 6-3 6-2 thrashing of Tallon Griekspoor.

Novak Djokovic says staying in the moment and managing challenging situations are his secret weapons in coping with the emotions and pressure of trying to make tennis history.

Novak Djokovic took a first unsteady step toward completing the calendar-year Grand Slam on Tuesday as the Serb laboured into the second round of the US Open with a 6-1 6-7(5) 6-2 6-1 win over dashing Danish teenager Holger Rune.

Three-time Grand Slam winner Andy Murray ripped Stefanos Tsitsipas for "nonsense" delaying tactics in a five-set US Open comeback victory Monday, saying the moves influenced the outcome of the match.

Serbian top seed Novak Djokovic will be the centre of attention when the final Grand Slam of the 2021 calendar, US Open, showdown begins today on the hardcourts at Flushing Meadows

Novak Djokovic hesitated to call the U.S. Open a now-or-never moment, but the history-hunting Serb noted on Friday that an opportunity for a calendar year Grand Slam could be one of them.

Venus Williams will miss the upcoming U.S. Open due to an injury, becoming the third U.S. female after her sister Serena and Sofia Kenin to announce on Wednesday they would not take part in the final Grand Slam tournament of the year.

After an Olympic stumble Novak Djokovic will get a second bite at history in the Big Apple with a calendar year Grand Slam there for the taking at the U.S. Open.

Serena Williams has withdrawn from next week's U.S. Open after the American said on Wednesday that her torn hamstring had not completely healed ahead of the final Grand Slam of the year.

Alexander Zverev will take an 11-match winning streak into the U.S. Open after adding the Western & Southern Open title to his Olympic gold medal on Sunday but still rates Novak Djokovic as favourite to take the title at Flushing Meadow. The German world number four defeated Russian Andrey Rublev 6-2 6-3 in less than an hour in Cincinnati to win his second Masters 1000 tournament of the season and fourth title in all. Zverev came up just short of landing his first Grand Slam title in New York when he lost the final to Dominic Thiem last year but said his preparations this season had been very different.

Spaniard Rafa Nadal said on Friday that he will end his 2021 season early due to a left foot issue that has been troubling him for a year, ruling him out of this month's U.S. Open.

An error-prone Naomi Osaka was stunned 3-6 6-3 6-3 by Jil Teichmann in the Western & Southern Open third round in Cincinnati on Thursday but the world number two said she had tried her best and would not lose any sleep over the defeat.

Naomi Osaka said she had felt "ungrateful" at times over the last year for not fully appreciating her life as one of the world's top tennis players.

Austria's Dominic Thiem will not defend his U.S. Open title after having to pull out of the hardcourt major with a wrist injury, the world number six said on Wednesday.

Former world number one Simona Halep says she is no longer afraid of COVID-19 after getting vaccinated and has called on others within the sport to get the vaccine to allow tennis to ease health and safety restrictions.

Naomi Osaka briefly left a press conference in Cincinnati on Monday after she appeared to get upset with a line of questioning about her relationship with the media, leading her agent to describe a reporter as a "bully".

Roger Federer will undergo another knee surgery after injuring it during the grasscourt season and will miss the U.S. Open given the rehabilitation process will rule him out of the sport for many months, he said on Sunday.

Novak Djokovic was beaten 1-6 6-3 6-1 by Germany's Alexander Zverev in the semi-finals of the men's singles at the Tokyo Games, dashing the Serbian's dream of winning his first singles gold medal and completing a Golden Slam.