Federer faces Serena for 1st time in career in mixed doubles, wins
Twenty-time Grand Slam winner Roger Federer and 23-time Grand Slam winner Serena Williams played a professional match against each other for the first time in history, in a mixed doubles match at Hopman Cup on Tuesday. Federer and his partner Belinda Bencic defeated Serena and her partner Frances Tiafoe in straight sets 4-2, 4-3[5-3] as Switzerland defeated USA 2-1. 