Serena Williams withdraws from Tsvetana Pironkova due to an ankle injury . The Australian had earlier managed to defeat Melbourne 's Bojana Jovanovski 6-2 6-4 . The Serbian broke to keep the contest alive , but fourth seed Williams responded to earn a 6-2 6-4 win before the results of a scan forced her to exit the Queensland event . The 13-time grand slam champion hopes to be fit for this month 's American Open . Williams has won the Melbourne event 12 times , a record in the Open era .
Serena Williams withdraws from Tsvetana Pironkova due to an ankle injury . The Australian had earlier managed to defeat Melbourne 's Bojana Jovanovski 6-2 6-4 . The 13-time grand slam champion hopes to be fit for this month 's American Open . Williams has won the Melbourne event 12 times , a record in the Open era .