Some suspect Wawrinka saying he did not believe in a clean sport anymore led to him being overlooked for a US Open main draw ...

Stan Wawrinka beat 17-time Grand Slam champion Roger Federer, his Swiss Davis Cup teammate, in straight sets to reach the semifinals of the French Open on Tuesday.

Eighth-seeded Stan Wawrinka, meanwhile, struggled with his serve but still advanced after a tough6-3, 6-4, 5-7, 6-3 victory over 67th-ranked Dusan Lajovic.

Stan Wawrinka marches on 😤 The 40-year-old overcomes Noguchi 6-3, 6-4 to book his spot in the Cancun quarterfinals ...

Wawrinka won his first French Open championship and second major title by stunning Djokovic 4-6, 6-4, 6-3, 6-4 in a superbly played match Sunday. "I know he's looking for that title," Wawrinka said.

Wawrinka next will face American Steve Johnson, whobeat Sergiy Stakhovsky 2-6, 6-3, 7-6 (5), 7-6 (6). Fifth-seeded Kei Nishikori, last year's US Open runner-up and the last remaining of five ...