Australian Open Day 5

Switzerland's Roger Federer tosses the ball as he plays Russia's Marat Safin during their men's singles match at the Australian Open in Melbourne on January 23, 2009.

Switzerland's Roger Federer returns to Russia's Marat Safin during their men's singles match at the Australian Open in Melbourne.

Russia's Marat Safin reacts as he plays Switzerland's Roger Federer during their men's singles match at the Australian Open in Melbourne.

Switzerland's Roger Federer, is celebrated by Russia's Marat Safin after his victory in a men's singles match at the Australian Open in Melbourne.

Serbia's Ana Ivanovic reacts as she leaves the court after losing to Russia's Alisa Kleybanova in a women's singles match at the Australian Open.

Australia's Jelena Dokic celebrates her victory over Denmark's Caroline Wozniacki during their women's singles match at the Australian Open.

Denmark's Caroline Wozniacki reacts as she plays Australia's Jelena Dokic during their women's singles match at the Australian Open.

Marcos Baghdatis of Cyprus returns to Mardy Fish of the United States during their men's singles match at the Australian Open in Melbourne.

Mardy Fish of the United States returns to Marcos Baghdatis of Cyprus during their men's singles match at the Australian Open in Melbourne.

Tomas Berdych of the Czech Republic celebrates after defeating Stanislas Wawrinka of Switzerland during their men's singles match at the Australian Open in Melbourne.