The former world number one plans to play more of a full schedule next year and will work to improve on her serve, which she said let her down particularly in the first and third sets.
Serena Williams did not need the help of a fan-filled Arthur Ashe Stadium to provide a lift during her 7-5, 6-4 win over the 96th ranked Kristie Ahn.
Those deep runs have left her better equipped to handle the pressure at the business-end of the majors.
Swiss tennis great Roger Federer said on Tuesday that anti-doping authorities have questions to answer about a perceived double standard applied to world number one Jannik Sinner after he dodged a suspension despite two positive tests earlier this year.
After rain led to the cancellation of all matches outside of the roof-covered Arthur Ashe Stadium on Tuesday, the tournament looks to make up for lost time with a busy schedule featuring 87 matches.
Naomi Osaka produced a commanding performance to knock out third seed Coco Gauff.
The five-time Grand Slam winner said Pegula was a worthy winner.
Jannik Sinner will hope to block out a rocking home crowd on Sunday when he faces Taylor Fritz in the US Open final at Flushing Meadows, where the 12th seed will be bidding to become the first American man in 21 years to win a Grand Slam singles title.
'The romanticism of late night tennis in New York, it's time to move past that'
Poland's world number one Iga Swiatek swatted aside 25th seed Anastasia Pavlyuchenkova 6-4, 6-2 with a near-flawless performance to reach the round of 16 for a fourth straight year at the U.S. Open on Saturday.
China's Zheng Qinwen is bidding to become the fourth woman to win Olympic gold and the US Open title in the same year
This year's US Open runs from Aug. 28-Sept. 10.
Federer, Djokovic headline Day 2 at Flushing Meadows
The 2025 US Open is more than just a tennis tournament; it's a bold display of personal expression and a vibrant celebration of style.
The US Open turned over Arthur Ashe Stadium to the Williams sisters on Thursday for a prime-time first round doubles match that could have been Serena's last after the pair fell 7-6(5), 6-4 to the Czech duo of Lucie Hradecka and Linda Noskova.
Carlos Alcaraz demolished Mattia Bellucci to banish memories of last year's shock early exit at the US Open on Wednesday.
Frances Tiafoe sees huge strides for American men after another deep US Open run. The ebullient fan favourite was already looking to the future.
Belinda Bencic reached her first-ever Grand Slam semi-final on Wednesday, fending off Donna Vekic to win 7-6(5), 6-3 in their US Open last-eight clash.
Eager to witness what many felt would be Serena Williams's final competitive match, thousands of fans poured into the Arthur Ashe stadium.
Novak Djokovic aims to win a record 25th Grand Slam and become the first US Open champion to successfully defend his title since Swiss great Roger Federer in 2008.
The US Open reached an emotional climax on Sunday as the year's final grand slam paused amid heavy security before the start of the men's singles to remember those who died in the 9/11 attacks 15 years ago.
Novak Djokovic's bid for a record 25th Grand Slam title kicked off on Monday with an easy win over qualifier Radu Albot in the US Open first round.
Climate protesters halted the US Open women's semi-final between American Coco Gauff and Czech Karolina Muchova for nearly an hour on Thursday.
Women's tennis's biggest names still remaining at the US Open take centre stage on Sunday with Grand Slam winners Maria Sharapova, Venus Williams, Garbine Muguruza and Petra Kvitova all appearing on Arthur Ashe Stadium.
Zverev put the incident behind him to seal the victory, which he described as the best moment of his career after his comeback from a serious ankle injury last year.
Romanian fifth seed Simona Halep advanced to the third round of the U.S. Open with a 6-3 6-4 win over Lucie Safarova on Thursday in the first full match played under a closed roof at Arthur Ashe Stadium. The $150 million retractable roof was installed ahead of this year's tournament and guaranteed there would be at least some action on a muggy and overcast Day Four at the year's final grand slam.
The 43-year-old remains the only Indian in the fray in the men's doubles event after Yuki Bhambri and Saketh Myneni made first round exits.
The celebrities who graced the men's and women's singles finals at Arthur Ashe Stadium on the weekend.
Alcaraz, winner of the last two Grand Slams at Roland Garros and Wimbledon, had made it to at least the quarter-final stage at every major in which he has competed since winning the US Open two years ago.
Steady rain hit the US Open on Monday, washing out the last match on Arthur Ashe Stadium court featuring five-time champion Roger Federer.
The 30-year-old said she was more nervous before facing world number one Iga Swiatek in the quarter-finals, a match she won in straight sets.
Serena Williams set Flushing Meadows abuzz on Saturday as the 23-time major winner appeared at the US Open - as a fan
Big names and young guns turn up the heat at US Open
Tiger-tattooed Aryna Sabalenka clawed her way back from injury and disappointment to hoist the US Open trophy at last.
Petra Kvitova, who missed part of the 2017 season after a home invasion left her with a badly cut left hand, continues her remarkable comeback when she faces American Venus Williams.
A disappointed Li Na admitted to an attack of stage fright in her humbling U.S. Open semi-final loss to Serena Williams and said she would have lost to any opponent she faced on Friday.
Thiem said he had no regrets retiring at 30.
Denis Shapovalov may not be old enough to drink in New York but is quickly becoming the toast of the Big Apple and the 18-year-old Canadian will again have a chance to light up the U.S. Open when he takes on Briton Kyle Edmund.
Images from the US Open women's singles first round matches, at Flushing Meadows, New York, on Tuesday.