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Roberta Vinci Upsets Serena Williams In US Open Semifinal

Grand Slam hopeful Serena Williams was upset by Italian player Roberta Vinci in the semifinal round of the U.S. Open.

Roberta Vinci Upsets Serena Williams In US Open Semifinal
Getty Images / Matthew Stockman
Katie Link
By Katie Link
SMS
Posted: 5:47 p.m. EDT Sep 11, 2015

Dreams of a calendar Grand Slam were crushed Friday. Italian player Roberta Vinci beat Serena Williams in three sets to advance to the U.S. Open final. 

The New York Times describes it as "one of the biggest surprises in tennis history." Not only was it Vinci's first appearance in the Grand Slam semifinal, but she entered the tournament unseeded. (Video via We Are Tennis)

Vinci called the victory "the best moment of my life" during the post-match interview.

And with good reason. She knocked out 21 time Grand Slam winner Williams. This was the fifth matchup between Vinci and Williams, and it's the first time Vinci's walked away with the win.

Vinci will face fellow Italian Flavia Pennetta in the final at 3 p.m. Eastern time on Saturday. 

This video includes images from Getty Images.