SINGAPORE - OCTOBER 29: Simona Halep of Romania in action against Agnieszka Radwanska of Poland in a round robin match during the BNP Paribas WTA Finals at Singapore Sports Hub on October 29, 2015 in Singapore. (Photo by Julian Finney/Getty Images)

Simona Halep is the latest player to withdraw from the Brisbane International.

Halep, the top seed at the event, has withdrawn due to a left leg injury, as she aims to be fit for the Australian Open.

Her decision to pull out of the tournament is a blow to organisers, with world No.4 Maria Sharapova also withdrawing on Tuesday.