MASON, Ohio — Four-time Grand Slam champion Naomi Osaka was eliminated by Shuai Zhang, 6-4, 7-5, in the first round of the Western & Southern Open.
The tournament outside Cincinnati lost another big name, Coco Gauff, when she retired from her match against qualifier Marie Bouzkova with a left ankle injury. Gauff had her ankle taped after the first set and dropped out after the first game of the second set.
The marquee match at this hart-court U.S. Open tune-up was Serena Williams against Emma Raducanu, last year’s champion at Flushing Meadows. Williams announced last week that she is transitioning away from tennis, although she has not said explicitly that the U.S. Open will be her last tournament.
Karolina Pliskova advanced with a 7-5, 6-1 win over Williams’ older sister, Venus.
Belinda Bencic, who beat Serena Williams last week in Canada, fell to Sorana Cirstea, 6-2, 6-7 (3), 6-4.
Rafael Nadal, sidelined since withdrawing from Wimbledon with an abdominal tear, practiced before a large crowd. The 22-time Grand Slam champion is scheduled to play a second-round match on Wednesday.
In a men’s first-round match, Wimbledon finalist Nick Kyrgios beat Alejandro Davidovich Fokina 7-5, 6-4.
PARMA, Italy — Top-seeded Maria Sakkari rallied past 97th-ranked Maryna Zanevska 2-6, 6-4, 6-4 on Thursday at the Parma Ladies Open to reach her first semifinal since the grass-court season.
Sakkari, who has gone three sets in all three of her matches this week, will face Danka Kovinic for a spot in the final of the clay-court event after Kovinic beat Jasmine Paolini 6-4, 6-4.
In her previous semifinal, Sakkari lost to Belinda Bencic in Berlin in June. The seventh-ranked Greek player was eliminated by Wang Xiyu in the second round of the U.S. Open on Aug. 31.
In the bottom half of the draw, Mayar Sherif of Egypt beat American opponent Lauren Davis 7-6 (2), 6-3 to reach her second career semifinal. Sherif next faces Ana Bogdan, who defeated fellow Romanian Irina-Camelia Begu 6-2, 7-6 (6).
PARMA, Italy — Top-seeded Maria Sakkari rallied past Arantxa Rus 3-6, 6-2, 6-3 to reach the quarterfinals of the Parma Ladies Open.
Sakkari, who accepted a late wild card to the red clay court tournament, was playing her first event since losing to Wang Xiyu in the second round of the U.S. Open.
The Greek player will next face Maryna Zanevska of Belgium after she eased past Dalma Galfi 6-1, 6-3.
Fourth-seeded Sloane Stephens of the United States, the 2017 U.S. Open champion, lost to Danka Kovinic 7-5, 2-6, 7-5.
Kovinic will face Jasmine Paolini in the quarterfinals after the Italian defeated compatriot Elisabetta Cocciaretto 4-6, 6-3, 6-4.
There will be an American in the final eight, however, as Lauren Davis rallied to beat Sara Sorribes Tormo 3-6, 6-4, 7-5. Sorribes Tormo had eliminated second-seeded Martina Trevisan in straight sets in the opening round.
Davis will play Mayar Sherif after the Egyptian player defeated Simona Waltert 6-3, 7-6 (1).
Also, third-seeded Irina-Camelia Begu of Romania eased past Italian wild card Matilde Paoletti 6-4, 6-4 to set up a quarterfinal against sixth-seeded Ana Bogdan, who beat Anna Karolina Schmiedlova 6-2, 3-6, 6-3.