Oh what a night: Federer shares selfie with Serena after win
Twenty-time Grand Slam champion Roger Federer took to Twitter to share a selfie with 23-time Grand Slam winner Serena Williams after defeating her in a mixed doubles match at Hopman Cup on Tuesday. "Oh what a night," the 37-year-old captioned the picture. This was the first time ever the duo played a professional match against each other. 