Roger Federer has beaten Serena Williams in a historic mixed doubles match at the Hopman Cup in Perth.
Federer and Bencic took the first set 4-2 and won 4-3 in the second after a 5-3 tie-break victory.
The result meant Switzerland beat the US 2-1 overall, with Williams having beaten Bencic 4-6 6-4 6-3 and Federer easily seeing off Tiafoe 6-4 6-1 in their earlier singles clashes.
Williams – who has amassed her honours across singles, doubles and mixed doubles – added: “It was a great experience. I’m sorry it had to finish – I was just warming up!
“This guy is great, both off the court and on the court. I think his serve is super-underestimated. It’s a killer serve, you can’t read it. I watched him all the time and I never knew how amazing it was.”