MELBOURNE (AP):

Serena Williams cut short a practice session on the eve of the Australian Open final against Maria Sharapova due to a cold she's been battling for the past week.

The number one-ranked American was shown in footage on Australia's Channel 7 network coughing into a towel and blowing her nose before she abandoned the practise session yesterday.

She later said in a statement released by the WTA: "I had a false start (this morning). I wasn't feeling really well. I've been sick with a cold all week, and I got better, then I got worse the morning."

She was feeling well enough to return to the practice court in the afternoon.

Williams will be aiming for her 19th Grand Slam singles title when she takes on Sharapova.