Caroline Wozniacki v Serena Williams in Denmark.
Dane to call it a day in Australia.
Last four looking strong.
Brit's fine form takes a tumble.
Dane questions accuracy of system.
What's going on in tennis today?
Results happening thick and fast, and here are the best of them.
Dane frustrated with early exit.
Dane "doing ok," says father.
Dane struggling for fitness.