Second-seeded American Mardy Fish announced to pull out of the ongoing LA Open ahead of the quarterfinals on Friday due to an abdominal strain.
The world No. 21, highest-ranked player at the hardcourt event, had been scheduled to face Argentina's Leonardo Mayer in the last eight and his withdrawal sent the 22-year-old Mayer to his first ATP semifinals.
Mayer will meet Australian qualifier Carsten Ball, who won 6-4, 6-4 over American John Isner on Friday.
The event has granted German Tommy Haas, ranked 22nd in the world, as the top seed, and double grand slam champion Marat Safin of Russia was the other big name in the draw.
Source: Xinhua