Serena Williams laughs off injury concerns

Serena Williams has made light of her aches and pains in the early stages of the Australian Open after her second-round victory earlier today.

A straight-sets win over Garbine Muguruza will be best remembered for an incident which saw Williams hit herself in the face with her own racket on a forehand follow through.

Williams admitted that she is waiting for the next injury to come after rolling her ankle in Melbourne earlier this week.

She told the Tennis Channel: "I'm beating myself up and I don't know why. I love myself, at least I think I do.

"One day I twist my ankle, one day I hit my mouth. I don't know what's going to happen on Saturday."

The five-time Australian Open champion is in doubles action with sister Venus Williams later today.