World number one Iga Swiatek defeated qualifier Cristina Bucsa, conceding 19 points during a 6-0, 6-1 win in third round at Australian Open on Friday. Swiatek won the match in 55 minutes. The top seed will now face Wimbledon champion Elena Rybakina, who beat last year's Australian Open runner-up Danielle Collins 6-2, 5-7, 6-2, in the fourth round.