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.

Wawrinka won the last one, an emphatic straight-sets victory in the French Open quarterfinals on his way to the title. "He's the best player ever," Wawrinka said of Federer.

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Wawrinka also acknowledges that growing up and rising through the ranks in Switzerland during Federer’s reign was both a challenge and a blessing. "I've had positives and negatives," Wawrinka said.

Roger Federer edged a five-set thriller against his fellow Swiss and close friend Stan Wawrinka at the Australian Open on Thursday to become the oldest Grand Slam finalist in 43 years. The 17-time ...

Federer swapped wands, grabbing a fresh racket after new balls were called and wielded it to devastating effect in the 12th game, breaking Wawrinka's serve to take the set when he hammered a ...

Wawrinka also acknowledges that growing up and rising through the ranks in Switzerland during Federer’s reign was both a challenge and a blessing. "I've had positives and negatives," Wawrinka said.