Paul McNamee, the former Australian Davis Cup star and ex-AO tournament director who was a co-founder of the Hopman Cup, has always been an innovator in tennis. He is also a strong proponent of doubles and believes if showcased properly, it can be a hit with fans.

Andrea Vavassori and Sara Errani were formidable as they took out Taylor Fritz and Elena Rybakina in the first round of the US Open mixed doubles event.