(BEIJING, August 14) -- No. 8 seed James Blake of the United States created the biggest upset of the Men's Olympic Tennis tournament by defeating Switzerland's World No. 1 Roger Federer 6-4, 7-6(2) in their Center Court quarterfinal clash on Thursday, August 14.
It was Blake's first win over the Swiss player. Federer entered the match with an 8-0 record in matches against his opponent and had only lost one set to Blake previously.
"One day I'll be able to tell my kids and grandkids that I beat the best of all time," Blake said.
Federer said earlier in the week that winning an Olympic gold medal was the focus of his entire season.
The Swiss player has yet to add a Grand Slam title this year to his 12 career victories. He will surrender the World No. 1 ranking he has held since 2004 to Rafael Nadal of Spain when the new world rankings come out on August 18.
Blake broke the serve in the ninth game of the first set, cashing in after Federer sent a forehand sailing over the baseline at deuce.
Federer chased down a 0-3 deficit in the second set, a position he also had been in the previous day in his match against Tomas Berdych of the Czech Republic, to force a tiebreak. Blake twice broke Federer's serve to seize a 5-2 lead, and from there he rode out the match in 90 minutes.
Federer made 56 unforced errors to Blake's 38 in the match.
The US player will face either No. 12 seed Fernando Gonzalez of Chile or Paul-Henri Mathieu of France in the semifinals on August 15.