Australian Open: GB’s Boulter plays Bencic, Sinner starts title defence – build-up

Day three of Australian Open in Melbourne – listen to Tennis Breakfast on BBC Radio 5 Sports Extra (UK only)

From 08:00 GMT: Britain’s Katie Boulter plays 10th seed Belinda Bencic on Margaret Court Arena

Defending men’s champion Jannik Sinner v Hugo Gaston

Italy’s Sinner bidding for third Melbourne title in a row

Two-time women’s champion Naomi Osaka follows against Antonia Ruzic

Defending champion Madison Keys through after nervy win but GB’s Sonay Kartal out