50 Moments that Mattered: It was one of the greatest upsets in tennis history, and is not soon to be forgotten. With Serena two wins away from the calendar grand slam, Roberta Vinci shocked the world, and herself, beating Serena in three sets to advance to the #USOpen final. _ #USOpen50 #tennis #robertavinci #instatennis #instasports #instalove #grandslam #builtforglory #champion