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• Gauff fights back to beat Badosa in China Open semi-finals

  Coco Gauff recovered from a set and a break down to reach the China Open final with a 4-6 6-4 6-2 victory over Paula Badosa on Saturday.

  Having given up an early break in the opener, Gauff got one of her own by converting her eighth break point in a mammoth eighth game featuring 10 deuces, only for Badosa to hit back immediately to go a set up.

  Gauff lost serve immediately in the second set to go on the back foot, only to level the match with back-to-back breaks, the second of them to love.

  The decider began with a series of breaks, Gauff taking two of them as the momentum swung her way, then she protected her lead all the way to reach her first final since winning January's Auckland Open.

  The 20-year-old is the youngest player to reach the women's singles final at the China Open since Caroline Wozniacki in 2010.

  She has fought from a set down to win in each of her last three matches, the first time she has done so in her career. She is the first player to do so in WTA-1000 events since Iga Swiatek at Indian Wells 2022.

  Data Debrief: Gauff brings up century

  Saturday's match was Gauff's 100th at WTA 1000-level events, and her 67th such victory.

  Among American players, only Serena Williams (87), Venus Williams and Jessica Pegula (70) have bettered her 67 wins through their first 100 matches at such events.

• Swiatek confirms split with coach Wiktorowski and Wuhan Open withdrawal

  Iga Swiatek has announced the end of her three-year partnership with coach Tomasz Wiktorowski, saying the split was a mutual agreement. 

  Wiktorowski, who joined Swiatek's team in 2022, helped her become the first Polish player to reach world number one and she has since spent 123 weeks at the top of the rankings.

  Swiatek also won 19 of her 22 career titles and an Olympic bronze medal in Paris earlier this year with Wiktorowski, along with four grand slam victories. 

  "After three years of the greatest achievements in my career, together with my coach Tomasz Wiktorowski we decided to part ways," Swiatek wrote on Instagram. 

  "I want to start with a big thank you and appreciating our work together."

  Swiatek has not competed since losing to Jessica Pegula in the quarter-finals of the US Open, choosing to withdraw from the China Open due to personal reasons. 

  The 23-year-old has also pulled out of the recent Korea Open in Seoul, citing fatigue, and next week's Wuhan Open. 

  Swiatek won the French Open and US Open during her opening season with Wiktorowski, before embarking on a 37-match winning run in 2022 - the longest streak by a woman this century. 

  The Pole won a fifth grand slam, which was her fourth with Wiktorowski, at Roland Garros in June, making it three consecutive wins at the tournament in Paris. 

  "Coach Wiktorowski joined my team for three seasons, when I strongly needed changes and a fresh approach to my game," Swiatek continued.

  "His experience, analytical and strategic attitude and enormous knowledge about tennis helped us to achieve things I've never dreamed of only a few months after we started working together."

  But Swiatek was disappointed with her hard-court performances this season, exiting the Australian Open in the third round and the US Open in the last eight. 

  The Pole said she has held "first talks" with prospective new coaches and will take a "couple of weeks" to start work with her next appointment.

  "Our main goal was to become number one player in the world and coach Wiktorowski was the one who said it first," Swiatek concluded. 

  "Due to this important change on my team, I give myself a couple of weeks to start cooperation with a new coach.

  "I'm in the middle of first talks with coaches from abroad (non-Polish) because I'm ready to take the next step of my career. I will let you know when I make a decision."

• Sabalenka stunned by Muchova in Beijing quarter-finals

  Karolina Muchova secured an upset at the China Open, snapping Aryna Sabalenka's 15-match winning streak to reach the semi-finals.

  The Czech prevailed in two hours and 48 minutes with a 7-6 (7-5) 2-6 6-4 win over the number one seed on Friday.

  Muchova started strong, forcing Sabalenka to defend three break points in the opening game, but they were evenly matched throughout.

  Sabalenka almost took the first set, but Muchova held her nerve, successfully fighting back against two set points before taking the tie-break.

  The Belarusian looked back to her free-flowing best in the second though, earning two breaks as she forced the decider in comfortable fashion.

  Sabalenka took an early lead in the final set, but from 4-2 down, Muchova clawed her way back, going on a four-game winning streak at the end to book a meeting with Qinwen Zheng or Mirra Andreeva in the final four. 

  Data Debrief: Czech mate

  Given Sabalenka's recent hot streak, this does look like an upset, but it is actually pretty run-of-the-mill for Muchova.

  She has now won her last three matches against Sabalenka in WTA events, defeating her at Cincinnati, Roland Garros 2023 and China Open 2024. 

  Excluding the BJK Cup, only Iga Swiatek (85.3%) has a higher winning percentage than Muchova on hard-court in WTA events during 2024 (84.6%, 11-2), surpassing Sabalenka (82.5%, 33-7).

  The 28-year-old has reached just her second career semi-final and is the player with the fewest WTA-1000 wins during the season before the start of the China Open (one) to reach this stage of the tournament.