Biggest Upset in Tennis History? Serena Loses

Serena's out in stunning fashion: The younger Williams sister lost today in the semis of the US Open in a massive upset to Italy's Roberta Vinci. The New York Times calls it "one of the biggest surprises in tennis history." The 43rd-ranked Italian won 2-6, 6-4, 6-4, thus ending Williams' bid to sweep the year's Grand Slam tournaments, a feat that hadn't been accomplished since 1988. Serena had just beaten her sister Venus to reach the semis. Vinci had never won a set off the 21-time major champion in four previous meetings. In fact, she was competing in her first career Grand Slam semifinal at age 32. (More Serena Williams stories.)