Defending champion Serena Williams needed just 45 minutes of playing time to advance to the fourth round of the Australian Open. The world number one defeated Russian teenager Daria Kasatkina 6-1, 6-1.Four-time champion Roger Federer also reached the last-16, beating Grigor Dimitrov 6-4, 3-6, 6-1, 6-4. It was the Swiss third seed’s 300th Grand Slam match win.

French Open champion Gauff knocked out by Potapova in third round
Sabalenka sees off Kasatkina to reach French Open fourth round
Parry stuns Anisimova to reach first Grand Slam fourth round at French Open
Osaka survives three-set scare against teenager Jovic
Cobolli cruises past Tien in straight sets to snap American's winning run
