Top seeds Serena Williams and Novak Djokovic have started their title defences at the Australian Open with straight set victories. Williams, who is chasing her 22nd Grand Slam, defeated Italian Camila Giorgi 6-4, 7-5. It was the American’s first match since losing in the semi-final of the U.S. Open in September. But Williams says she needed those four months off.
Listen
Elsewhere, men’s world number one Djokovic beat the 19-year-old South Korean Hyeon Chung 6-3, 6-2, 6-4. Former champions Roger Federer and Maria Sharapova will hit the courts later.

PSG retain Champions League title with shoot-out win over Arsenal
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
