MIAMI GARDENS, Fla. — The new site for the Miami Open suddenly is missing a lot of star power.
Serena Williams withdrew Saturday, blaming a previously undisclosed left knee injury. Less than two hours later, top-ranked Naomi Osaka lost in the third round to tour veteran Hsieh Su-Wei of Taiwan, 4-6, 7-6 (4), 6-3.
Osaka’s departure matched the earliest ever in the tournament by a top-seeded woman and jeopardized her No. 1 ranking, depending on results next week.
Williams’ withdrawal was unexpected because she showed no signs of injury a day earlier while winning her opening match against Rebecca Peterson 6-3, 1-6, 6-1. Williams didn’t mention any health issues during a news conference after the match, and the WTA had no information regarding when she was hurt.
The victory Friday was Williams’ first at Hard Rock Stadium, the Miami Dolphins‘ home and the Miami Open’s new center court. The tournament moved this year from Key Biscayne, where Williams won eight titles.
“I am disappointed to withdraw,” Williams said in a statement. “It was an amazing experience to play at Hard Rock Stadium this year, and I would like to thank the Miami Open for putting on an amazing event. I hope to be back next year to play at this one-of-a-kind tournament in front of the incredible fans here in Miami.”
Williams was next scheduled to play No. 18-seeded Qiang Wang, who advanced to the fourth round.
Also reaching the round of 16 was the 33-year-old Hsieh, who turned pro in 2001 but has achieved the two biggest victories of her career in the past nine months. Her only other victory over a No. 1 player came against Simona Halep at Wimbledon last year.
With two-handed groundstrokes from both sides, Hsieh was the steadier player from the baseline against Osaka, who has won the past two Grand Slam tournaments. When Hsieh closed out match point with a forehand volley winner, she then began to cry as the crowd applauded her performance.
It was the first time in 64 matches that the 21-year-old Osaka lost after winning the first set.
Williams, 37, still hasn’t won a tournament since the 2017 Australian Open, before she took a break of more than a year to become a mom. She has played only eight matches this year.
Her stay at the Miami Open was also brief last year, when she lost in the first round to Osaka. Friday’s match was Williams’ first since she retired at Indian Wells two weeks ago because of a viral illness.