Sore ankle and all, Serena Williams through to 3rd round at Australian Open

Serena Williams of the US waits to during her second round match against Spain's Garbine Muguruza at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 17, 2013. (AP Photo/Andrew Brownbill) (The Associated Press)

Serena Williams of the US waits in her chair during her second round match against Spain's Garbine Muguruza at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 17, 2013. (AP Photo/Andrew Brownbill) (The Associated Press)

MELBOURNE, Australia – Serena Williams has moved into the third round of the Australian Open with a 6-2, 6-0 win over Garbine Muguruza of Spain on Thursday.

Williams injured her right ankle in her first-round match against Edina Gallovits-Hall, falling to the court, but still managed to complete a 6-0, 6-0 victory.

She had a private practice session on Wednesday and didn't seem bothered by the injury in Thursday's 75-minute match.

With the win, Williams stayed on track to win her third Grand Slam in a row — she also won last year's Wimbledon and U.S. Open — and a chance to complete the second "Serena Slam" of her career — holding all four majors at the same time.