Vinci ended up winning the match in three sets, which a source tells ET got pretty intense. "Serena was yelling after each shot she won," the source observed. "Then Roberta at one point threw her hands up when she won and basically was taunting the crowd -- because everyone was cheering only for Serena."
Not surprisingly, it didn't take long for the Drake backlash to begin.
I'm not saying Venus should grab Drake and go for a walk. But she really should. I mean now. Not walk. Run. #JinxesAreRealPeople
Still, the rapper was at least a good sport in the audience, especially when they played his hit, "Hold On, We're Going Home."
"Drake looked happy," an eyewitness tells ET. "He was laughing and smiling when the song came on."
Serena's loss, however, is going to take a lot more to get over, as she was on her way to becoming only the sixth player in history to win all four grand slams in a year. The 33-year-old tennis champ "shook hands and bailed" after the surprising upset, our source says, and then told the media she would not talk about how she feels about the match. She opted only to praise Vinci, whom she said "played the best game of her life."