Serena Williams returns to Aus Open with an opening round win
American tennis player Serena Williams returned to the Australian Open with a win in the opening round of the tournament. Among other results, Australian Nick Kyrgios failed to go past Canada's Milos Raonic in the first round, while Novak Djokovic and Alexander Zverev both registered straight-set wins. Roger Federer and Rafael Nadal will play their second-round matches tomorrow.