![Six years ago, no one thought Serena Williams would be defeated at the US Open. But along came Roberta Vinci, and down went a calendar-year Slam Six years ago, no one thought Serena Williams would be defeated at the US Open. But along came Roberta Vinci, and down went a calendar-year Slam](https://images.tennis.com/image/private/t_16-9_768/tenniscom-prd/in9ywlot3h8xojytp1jo.jpg)
Six years ago, no one thought Serena Williams would be defeated at the US Open. But along came Roberta Vinci, and down went a calendar-year Slam
US Open Tennis on Twitter: "#Vinci had three break points against #Serena but the champ stays calm under pressure to hold 1-0. #SWeep15 #usopen http://t.co/JH3MBFBYOX" / Twitter
![Against all odds: 300-1 outsider Roberta Vinci knocks Serena Williams out of US Open | South China Morning Post Against all odds: 300-1 outsider Roberta Vinci knocks Serena Williams out of US Open | South China Morning Post](https://cdn1.i-scmp.com/sites/default/files/2015/09/12/tennis-open_uso633.jpg)
Against all odds: 300-1 outsider Roberta Vinci knocks Serena Williams out of US Open | South China Morning Post
![The indescribable Roberta Vinci - Official Site of the 2023 US Open Tennis Championships - A USTA Event The indescribable Roberta Vinci - Official Site of the 2023 US Open Tennis Championships - A USTA Event](https://photo-assets.usopen.org/images/pics/large/f_20150911_PS4_8976.jpg)
The indescribable Roberta Vinci - Official Site of the 2023 US Open Tennis Championships - A USTA Event
![25 years of Arthur Ashe Stadium: Roberta Vinci slices, dices and stuns Serena Williams, 2015 - Official Site of the 2023 US Open Tennis Championships - A USTA Event 25 years of Arthur Ashe Stadium: Roberta Vinci slices, dices and stuns Serena Williams, 2015 - Official Site of the 2023 US Open Tennis Championships - A USTA Event](https://photo-assets.usopen.org/images/pics/large/f_Vinci_Serena_5.jpg)
25 years of Arthur Ashe Stadium: Roberta Vinci slices, dices and stuns Serena Williams, 2015 - Official Site of the 2023 US Open Tennis Championships - A USTA Event
![Year after stunning Serena Williams, Roberta Vinci returns to U.S. Open with win โ The Denver Post Year after stunning Serena Williams, Roberta Vinci returns to U.S. Open with win โ The Denver Post](https://www.denverpost.com/wp-content/uploads/2016/08/roberta-vinci.jpg?w=1024)