The loss ends five-time major champion Swiatek's bid to become the first woman to win the tournament in the Southern California desert three times.
Karolina Pliskova overcame a slow start before beating Garbie Muguruza 4-6, 6-2, 7-6 (6) in her opening match at the WTA Finals. In a contest between two former No. 1-ranked players, the third-seeded Pliskova struggled early adjusting to the nearly 5,000-feet altitude of Guadalajara, Mexico's second largest city on Wednesday.
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.
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.
Canada's Eugenie Bouchard, on a comeback trail from injury, began her campaign in the tournament with a 7-5. 6-2 win over Joanne Zuger of Switzerland. She was joined in the second round by compatriot and seventh-seed Rebecca Marino.
Spain's Paula Badosa ground out a 7-6(4), 6-4 victory over Maria Sakkari at the WTA Finals in Guadalajara, Mexico on Saturday and advanced to the semi-finals with two wins from two matches in Group Chichen Itza after Aryna Sabalenka beat Iga Swiatek.
Rajeshwaran shown the door at Mumbai Open
Aryna Sabalenka is the red-hot favourite at Melbourne Park, where another victory would give her a fourth major title and widen the gap in the rankings to Poland's Iga Swiatek and Coco Gauff of the United States.
Simona Halep announced her retirement from professional tennis on Tuesday after losing in the first round at her home event in Cluj.
Wimbledon organisers have 'zero appetite' to turn the Championships into a 15-day event
Third seed Andrey Rublev suffered a first round exit after his Qatar Open title, losing to qualifier Quentin Halys 3-6, 6-4, 7-6(5) at the Dubai Open on Tuesday.
Jannik Sinner begins his Australian Open title defence against Nicolas Jarry while women's champion Aryna Sabalenka takes on 2017 U.S. Open winner Sloane Stephens
Maaya's greatest strengths is her fearlessness.' 'Regardless of her opponent, she never backs down.' 'Even when she was eight years old, she fought for every point, never giving up.'
The Finals, contested by the world's top eight singles players and eight doubles teams, was moved out of China's Shenzhen after last year's event was cancelled due to the COVID-19 pandemic.
Aryna Sabalenka took a step closer to a first trophy of the year before her Australian Open title defence begins later this month.
Third seed Alexander Zverev eased past home favourite Ugo Humbert
Chinese tennis star Peng Shuai, whose whereabouts have been a matter of international concern for weeks, attended a tennis tournament in Beijing on Sunday.
Coco Gauff was given a solid workout by former champion Sofia Kenin but continued her lengthy winning streak
The Australian won a tour-leading five titles this year including her second Grand Slam.
Tennis great Serena Williams is recovering from surgery to remove a large cyst on her neck.
ATP, WTA cancel China events, including Shenzen Finals
An outcry over the whereabouts of Chinese tennis star Peng Shuai escalated on Friday as the Women's Tennis Association (WTA) said it was prepared to pull its tournaments out of China if they were not satisfied with the response to her sexual assault allegation.
French Tennis Federation (FFT) President Gilles Moretton described Osaka's action as a "phenomenal mistake".
Sofia Kenin advanced to the Toray Pan Pacific Open semifinals with a 6-3, 6-4 upset of No. 3 seed Daria Kasatkina on Friday in Tokyo.
Roger Federer called for a merger between the two governing bodies last month, with both Simon and ATP Tour Chairman Andrea Gaudenzi welcoming the suggestion. But some top WTA players have said they want an equal standing for the women players in a combined body.
It was an emotional win for Aryna Sabalenka, who missed Wimbledon last month due to a shoulder injury.
Djokovic saved three breakpoints in stifling conditions to go 5-4 up but lost the opening set in a tough tiebreak as Opelka cranked up his serve
Paula Badosa overcame a slow start to take down Belarusian top seed Aryna Sabalenka after Maria Sakkari continued her dominance of Iga Swiatek in the round-robin stage of the WTA Finals in Guadalajara, Mexico on Thursday.
India's Ankita Raina on Friday won her maiden WTA title as she and her Russian partner Kamilla Rakhimova clinched the doubles event in the Phillip Island Trophy in Melbourne.
The restart has divided opinion among the players, with some 200,000 new COVID-19 cases being reported globally every day and international travel restrictions still in place.
AITA President Anil Jain, who was accused of using his position for personal gains, avoided facing a no-confidence motion from the state associations only after he agreed to step aside.
No. 6 seed Yuan Yue came back from down 3-0 in the second set to win the last six games of the match and defeat former world No. 1 Simona Halep on Monday in the opening round of the Hong Kong Open.
American great Billie Jean King had called for a unified governing body for men and women years ago but the 29-year-old Johanna Konta feels Federer's comments have brought attention back to the topic.
Images from Day 5 of the 2025 Australian Open at Melbourne Park on Thursday.
Maria Sharapova hit out at the ruling body of women's tennis (WTA) on Friday for making her take part in a publicity shoot on the eve of the Italian Open.
Following the cancellation, the Korea Open in Seoul is the only event left in Asia on WTA's provisional calendar for 2020.
Other nominees for the prize are Angelique Kerber (Germany), Petra Kvitova (Czech Republic and Caroline Wozniacki (Denmark).
Zheng's win improved her record at the Pan Pacific Open to 8-1, with the 22-year-old having lost in the 2022 final to Liudmila Samsonova in her only previous appearance in the tournament.
Anett Kontaveit handed Czech Karolina Pliskova a 6-4, 6-0 drubbing to become the first player to qualify for the semi-finals while Garbine Muguruza came from behind to defeat Barbora Krejcikova 2-6, 6-3, 6-4 at the WTA Finals in Guadalajara, Mexico on Friday.
Becoming the WTA number one in the world is a dream come true'