BUENOS AIRES, Argentina — Juan Martin del Potro has fractured his right patella bone in what the Argentine called “a hard blow that leaves me without strength.”
Del Potro retired Thursday against Borna Coric at the Shanghai Masters after injuring his knee. Third-seeded Del Potro fell near the end of the first set. The U.S. Open finalist had the knee wrapped but called it quits after losing the first set 7-5.
Tests on Saturday showed the fracture, Del Potro’s spokesman Jorge Viale tweeted Sunday.
“In the coming days, the doctors will evaluate the recovery process needed to return,” Viale said.
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.