Australian Open Day 11

Switzerland's Roger Federer makes a return to Andy Roddick of the United States during their men's singles semifinal match at the Australian Open in Melbourne on January 29, 2009.

Andy Roddick stretches to return to Roger Federer during their men's singles semifinal match at the Australian Open in Melbourne.

Roger Federer makes a return to Andy Roddick during their men's singles semifinal match at the Australian Open in Melbourne.

Andy Roddick reacts as he plays Roger Federer during their men's singles semifinal match at the Australian Open in Melbourne.

Roger Federer greets Andy Roddick after winning their men's singles semifinal match at the Australian Open in Melbourne.

Russia's Elena Dementieva reacts as she plays Serena Williams of the United States during their women's singles semifinal at the Australian Open in Melbourne.

Serena Williams returns to Elena Dementieva during their women's singles semifinal at the Australian Open in Melbourne.

Serena Williams jumps after winning the women's singles semifinal against Elena Dementieva at the Australian Open in Melbourne.

Russia's Vera Zvonareva makes a return to compatriot Dinara Safina during their women's singles semifinal at the Australian Open in Melbourne.

Dinara Safina makes a return to Vera Zvonareva during their women's singles semifinal at the Australian Open in Melbourne.