A "super-happy" Aryna Sabalenka surged past China's Bai Zhuoxuan into the Australian Open third round on Wednesday ahead of fellow world number one Carlos Alcaraz resuming his quest for tennis history.

Three-time finalist Daniil Medvedev is also in action at a cooler and overcast Melbourne Park after days of hot weather, as are third seeds Coco Gauff and Alexander Zverev.

Originally published on doc.afp.com, part of the BLOX Digital Content Exchange.