A thrilling seventh game had both players scrambling in long rallies as the momentum shifted back and forth until Gauff fired a backhand winner and screamed in triumph.
Australian Open defending champion Madison Keys raised her game in the Melbourne Park heat to beat Karolina Pliskova 6-3, 6-3 and reach the fourth round.
Victoria Mboko, a 19-year-old Canadian tennis player, defeated Australian Open champion Elena Rybakina in the Qatar Open quarter-finals, marking a significant step towards entering the WTA top 10 rankings.
The four-times Grand Slam champion, who is eyeing her third Australian Open trophy when the tournament begins on January 18 at Melbourne Park, was pushed harder in the next set but edged ahead again at 5-4 to wrap up the win on serve.
The day session attendance of 51,048 was some 10,000 short of day six on Friday and even less than last year's corresponding session.
IMAGES from all the action on Day 8 of the Australian Open in Melbourne on Sunday.
At this year's US Open second-round match against Sorana Cirstea, Muchova broke down mid-match in a scene that was as human as it was unexpected.
Venus Williams showed flashes of vintage form under the lights at Arthur Ashe Stadium on Monday but despite pushing Karolina Muchova to a deciding set.
Six weeks ago Amanda Anisimova couldn't win a single game against Iga Swiatek in the Wimbledon final. On Wednesday the American beat the Polish second seed in straight sets.
'We heard it was like the Hollywood of mixed doubles.'
Venus Williams, 45, made an age-defying return to tennis this year, becoming the oldest WTA singles match winner since 2004 in July.
'The kids are already used to this place. We go back and that's a different environment.' 'So, mentally, emotionally we are stressed.'
Renata Zarazua, the only Mexican player in the US Open main draw, pulled off a stunning upset by beating sixth seed Madison Keys in the first round.
Naomi Osaka produced a commanding performance to knock out third seed Coco Gauff.
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.
Iga Swiatek was the latest top player to suffer an upset loss in Montreal as the Wimbledon champion
Tenth seed Lorenzo Musetti rallied from a set down to beat Frenchman Giovanni Mpetshi Perricard in the first round of the US Open on Tuesday even as Carlos Alcaraz mauled big-serving American Reilly Opelka and veteran Venus Williams made an emotional exit.
Maria crowned first Queen's Club women's champion in 52 years
American lucky loser Reilly Opelka put up an intense battle to stun top seed Daniil Medvedev 7-6(5), 7-6(5) and reach the Libema Open semi-finals in Den Bosch on Friday.
List of Wimbledon women's singles champions after Iga Swiatek beat Amanda Anisimova in the final on Saturday:
The Women's Tennis Association (WTA) said it has banned a man who exhibited "fixated behaviour" towards Emma Raducanu after he was taken away by security personnel during the Briton's match at the Dubai Championship late on Tuesday.
Russian teenage sensation Mirra Andreeva continued her giant-slaying exploits at the Dubai Tennis Championships by upsetting Kazakhstani sixth seed Elena Rybakina 6-4, 4-6, 6-3 in the semi-finals on Friday.
Twice champion Iga Swiatek walloped Czech Karolina Muchova in straight sets to reach the Indian Wells quarter-finals on Tuesday.
The Dutchman collapsed on the court after converting his sixth match-point to end an absorbing three hour, seven minute affair under sunny skies on Stadium One court.
Russian teenage sensation Mirra Andreeva continued her giant-slaying exploits at the Dubai Tennis Championships by upsetting Kazakhstani sixth seed Elena Rybakina in the semi-finals.
Russian seventh seed Daniil Medvedev, the 2023 Miami champion who arrived this year fresh off a run to the Indian Wells semi-finals, crashed out at the first hurdle as he fell 6-2, 6-3 to Spaniard Jaume Munar.
Madison Keys was dumped out of the Miami Open third round on Sunday, falling 6-4, 6-2 to Philippine wild card Alexandra Eala
Fonseca cruised through the first set before Fearnley found his groove in the second to level the match on a windy day in the California desert.
Defending champion Iga Swiatek crushed Dayana Yastremska 6-0, 6-2 and 2023 champion Elena Rybakina powered past Britain's Katie Boulter 6-0, 7-5 to reach the fourth round of Indian Wells on Sunday in displays of dominance.
Heading into the final, Gauff had lost the first set in three straight matches and the former U.S. Open champion seemed determined to buck that trend, serving to love in the opening game and breaking early for a 2-0 lead.
It was Kristyna's first win over a top-five ranked player and she will go on to play fellow Czech Barbora Strycova in the quarter-finals.
All the action from Day 4 at the Australian Open on Wednesday
US President Donald Trump has imposed tariffs and a travel ban on Colombia after the South American nation refused to accept two American military planes deporting undocumented Colombians. The move comes after President Trump announced mass deportations of illegal immigrants and warned countries of consequences if they refuse to accept them. Colombian President Gustavo Petro, in a post on X, said that the US cannot treat Colombian migrants as criminals and denied the entry of American planes carrying Colombian migrants into Colombian territory. Trump responded by imposing a 25% tariff on all goods coming into the US, a travel ban and immediate visa revocations on Colombian government officials, and visa sanctions on all party members, family members and supporters of the Colombian government. The US also announced enhanced customs and border protection inspections of all Colombian nationals and cargo on national security grounds. In retaliation, Colombia announced a 25% import tariff on American products.
Karolina Muchova snapped U.S. Open champion Aryna Sabalenka's 15-match win streak to shock her 7-6(5) 2-6 6-4 in the China Open quarter-finals on Friday, while Olympic champion Zheng Qinwen beat Mirra Andreeva 5-7 6-0 6-4 to reach the semi-finals.
Images from the US Open women's singles semi-finals at Flushing Meadows on Thursday.
Images from the US Open women's singles second round matches, at Flushing Meadows, New York, on Thursday.
Romania's Ana Bogdan advanced the quarterfinals of the Japan Open with a 6-0, 7-6 (5) victory over No. 4 seed Marie Bouzkova of the Czech Republic on Thursday in Osaka.
Carlos Alcaraz will be backed to extend his winning run at the Grand Slams to 16 matches following triumphant French Open and Wimbledon campaigns.
Naomi Osaka has four major titles under her belt but the second round at Flushing Meadows, Wimbledon and Roland Garros was as good as it got this year for the Japanese 26-year-old, who exited the Australian Open in the first round.
Czech Karolina Pliskova stopped upset-maker Varvara Lepchenko in the semi-finals at the Bank of The West Classic in Stanford, California, on Saturday.
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