Serena Williams has continued her powerhouse start to the Australian Open with a 6-2 6-1 third-round demolition job on Ukrainian teenager Dayana Yastremska.

Yastremska had beaten Australian Samantha Stosur in the opening round of the tournament but she was no match for seven-time Open champ Williams, who has only dropped nine games in her first three matches.

William’s opponent in the round of 16 on Monday will be either her older sister Venus or world No.1 Simona Halep.