American Ann Li beat top seed Aryna Sabalenka at the Wuhan Open in China on Wednesday, winning on her 10th match point, the Associated Press reported. The score was 3-6, 6-4, 7-6 (5).

Li, ranked 31st in the world, called it "a crazy match," the BBC reported. "I didn't start well and I missed opportunities, but she played well on those match points," she said.

It was the biggest win of Li's career, both outlets said. It was also her first win over Sabalenka in four meetings, the WTA reported.

Sabalenka won the first set and led 4-2 in the second, the AP said. Li then won nine of the next 11 games and built a 5-2 lead in the third set, according to the WTA.

Sabalenka fought back. She saved five match points to hold for 5-3 and two more at 5-4, the BBC reported. She saved two more in the tiebreak. Li finally won with a forehand winner, the WTA said.

Sabalenka needed treatment during the match on her taped right knee, the AP reported.

"I think on some of those match points I was about to lose my mind," Li said, according to the WTA. "In the end, you just have to realize — I didn't even play that bad... She just played really well."

Sabalenka has won four major titles and three Wuhan titles, the AP said. It was her second loss in a row, after she lost to Nikola Bartunkova in Beijing last week, the BBC reported.

Second seed Jessica Pegula also lost, falling to Latvia's Jelena Ostapenko, both outlets said. Iga Swiatek moved on with a 6-2, 6-1 win over Magdalena Frech, the BBC reported.

What we know: Li beat Sabalenka on her 10th match point to reach the third round.
What we don't: How serious Sabalenka's knee problem is.