![Italy's Roberta Vinci celebrates after winning a point during her Fed Cup semifinal tennis match against Czech Republic's Petra Kvitova, in Palermo, Italy, Saturday, April 20, 2013. Sara Errani and Roberta Vinci Italy's Roberta Vinci celebrates after winning a point during her Fed Cup semifinal tennis match against Czech Republic's Petra Kvitova, in Palermo, Italy, Saturday, April 20, 2013. Sara Errani and Roberta Vinci](https://l450v.alamy.com/450v/2n7m7aw/italys-roberta-vinci-celebrates-after-winning-a-point-during-her-fed-cup-semifinal-tennis-match-against-czech-republics-petra-kvitova-in-palermo-italy-saturday-april-20-2013-sara-errani-and-roberta-vinci-gave-italy-a-commanding-2-0-lead-over-the-two-time-defending-champion-czech-republic-in-the-fed-cup-semifinals-saturday-errani-opened-with-a-6-4-6-2-win-over-lucie-safarova-before-roberta-vinci-followed-up-with-a-6-4-6-1-victory-over-eighth-ranked-petra-kvitova-ap-photoalessandro-fucarini-2n7m7aw.jpg)
Italy's Roberta Vinci celebrates after winning a point during her Fed Cup semifinal tennis match against Czech Republic's Petra Kvitova, in Palermo, Italy, Saturday, April 20, 2013. Sara Errani and Roberta Vinci
![13 reasons Serena Williams' loss to Roberta Vinci was the biggest upset in tennis history | For The Win 13 reasons Serena Williams' loss to Roberta Vinci was the biggest upset in tennis history | For The Win](https://wp.usatodaysports.com/wp-content/uploads/sites/90/2015/09/slack-imgs.png)
13 reasons Serena Williams' loss to Roberta Vinci was the biggest upset in tennis history | For The Win
![Roberta Vinci of Italy celebrates winning a point against Daniela Hantuchova of Slovakia during their match at the Indian Wells WTA tennis tournament in Indian Wells, California, March 13, 2010. REUTERS/Danny Moloshok ( Roberta Vinci of Italy celebrates winning a point against Daniela Hantuchova of Slovakia during their match at the Indian Wells WTA tennis tournament in Indian Wells, California, March 13, 2010. REUTERS/Danny Moloshok (](https://c8.alamy.com/comp/2E7GYBA/roberta-vinci-of-italy-celebrates-winning-a-point-against-daniela-hantuchova-of-slovakia-during-their-match-at-the-indian-wells-wta-tennis-tournament-in-indian-wells-california-march-13-2010-reutersdanny-moloshok-united-states-tags-sport-tennis-2E7GYBA.jpg)