Serena Williams (left) and Venus Williams. Photos: Reuters Serena Williams takes on big sister Venus in the main event of day five at the US Open on Friday, while defending men’s champion Rafa Nadal and women’s champion Sloane Stephens are also in action at Flushing Meadows. The 30th career meeting between Serena and Venus also … Continue reading Serena and Venus showdown set for day five at US Open