Amanda

Keys appeared on course for a first fourth-round appearance at her home slam since 2023 after taking a commanding third set lead against Olympic champion Zheng.

But the 2025 Australian Open winner would miss a match point and lose each of the final seven games in a 1-6 7-6 (7-3) 7-5 loss that stunned the crowd.

The 31-year-old Keys said she felt as though she “couldn’t play tennis anymore” in the final set.

“I obviously got off to a really good lead, and then I got really scared, like I couldn’t swing [the racquet],” Keys said.

“I felt like I couldn’t play tennis anymore. It just felt like it was a much bigger deal than just playing a tennis match all of a sudden.”

Keys, who lost the 2017 US Open final to fellow American Sloane Stephens, went out in the fourth round at the other three majors in 2026.

“I feel like I’ve been struggling for a while now. I’m going to have to make some sort of changes,” Keys said.

“I just kind of keep putting it off because that’s how the tennis world works. It’s just to the point where I actually need to do something about it.”

Anisimova, beaten by world number one Aryna Sabalenka in last year’s US Open final, lost in straight sets to Russian-born Austrian 24th seed Anastasia Potapova.

The 25-year-old was visibly frustrated with herself throughout the contest, losing her serve twice in the first set and four times in a topsy-turvy second.

Meanwhile, two-time champion Naomi Osaka fought back from a break down in the decider to see off Belgian 23rd seed Elise Mertens.

Osaka, seeded 13th, won 6-3 3-6 7-5 to set up a last-16 match against second seed Elena Rybakina.

Kazakhstan’s Rybakina, who knows she will be guaranteed to become the new world number one if she reaches the semi-finals, demonstrated her quality in a 7-6 (8-6) 6-3 victory over Ukraine’s Yuliia Starodubtseva.

Amanda Serrano retained her WBA and WBO featherweight belts with a narrow majority decision over Argentina’s Lucrecia Manzur in the first world title fight to be streamed live on TikTok.

The Puerto Rican was made to work for her 50th career win, edging a majority decision but missing the 33rd knockout she needed to break the women’s record, remaining on 32.

Serrano’s fight, held over 12 two-minute rounds, may not have delivered a record‑breaking knockout, but it drew 3.4 million total views on TikTok.

The 37-year-old continues to be one of the most watched female fighters in the world, with her third fight against Ireland’s Katie Taylor last year drawing an audience of six million on Netflix and their rematch in 2024 getting over 50 million on the same platform.

Friday’s fight in Temeculam, California was scored 114-114, 116-112 and 116-112 in favour of Serrano.

Manzur troubled the champion early with repeated right hands, but the Argentine tired as Serrano seized momentum from round nine and finished the fight in control.

Speaking after the bout, Serrano said: “I am so happy and honoured. That was the first championship main event fight on TikTok guys, super excited, super honoured.”

On Manzur, Serrano added: “I knew this girl was tough. She’s young. She’s 27. She’s 10 years younger than me. These girls are getting younger and stronger.

“She was hungry, and I knew that coming into training. I trained very hard because I knew it was an opportunity for her, so I had to come on my A game.”

The unified champion will now be hoping to eclipse Christy Martin with a 33rd stoppage in her farewell fight, which she plans to stage in Puerto Rico later this year or in early 2027.