Defending champion Serena Williams has made short work of Taiwan’s Su-Wei Hsieh to roll into the Australian Open third round.

Williams took exactly one hour to wrap up the match against the world No.90 6-1 6-2.

Gunning for her seventh title at Melbourne Park, the world No.1 completely overpowered her opponent but Hsieh was more difficult than the scoreline indicated.

“She’s a tricky opponent who I think was a good match-up for me,” Williams said.

“She’s someone who can play any shot at any time from anywhere on the court.

Williams will next face world No. 69 Daria Kasatkina after the Russian accounted for Croatian Ana Konjuh 6-4 6-3.

The American was joined in the third round by last year’s losing finalist Maria Sharapova.

The Russian veteran, seeded five, made short work of the world No.105 Belarusian Aliaksandra Sasnovich 6-2 6-1.

Ukrainian Kateryna Bondarenko shocked 23rd seed Svetlana Kuznetsova in their second round clash.

World No.92 Bondarenko broke through for her first win over the Russian with a 6-1 7-5 victory.