It’s Turn Back The Clock Day as 30-somethings Serena Williams, Catalina Castano, David Nalbandian, Tommy Haas And Juliean Benneteau bid for titles on Sunday.

Rafael Nadal and Roger Federer both crusied in the quarterfinals while in Dubai Serena Williams stands just two sets from returning to the No. 1 ranking.

Currently ranked No. 2, the younger Williams sister has been ridiculously dominant against the current Top 5: No. 1 Victoria Azarenka (11-1 career head-to-head, 5-0 in 2012), No. 3 Maria Sharapova (10-2, 3-0 in 2012), No. 4 Aggie Radwanska (4-0) and No. 5 Li Na (6-1).

The kind of field that makes you ask, “Is this an ITF event? A Challenger? A public parks event?”

Defending champion Victoria Azarenka meets Li Na for the 2013 Australian Open women’s singles title.

Victoria Azarenka earned a controversial win over teen Sloane Stephens to book her spot in the Australian Open finals where she’ll meet Li Na Saturday. Novak Djokovic raced in the men’s final. He’ll await Friday’s Roger Federer-Andy Murray winner.

“I don’t know how many unforced errors I ended up hitting, but for sure more in one set than I probably did in the whole tournament,” she said. “So I think her level was high. But as for my end, I mean, you can tell. You each can say this is definitely not my best match in months.”

Two of the “Big 4″ shrugged off the competition on Monday to move into the quarterfinals at the Australian Open when Roger Federer held off Canadian Milos Raonic 6-4, 7-6(7), 6-4, and Andy Murray rolled Frenchman Gilles Simon 6-3, 6-1, 6-3.

Apparently unaware of his fall off in the third set, Tomic said afterward, “It’s just a matter of time when I get up to the big group of boys in the Top 10. I know I’m going to be in there with this attitude.”

The top seeds continue to have their way at the Australian Open as Roger Federer, Serena Williams, Victoria Azarenka and Andy Murray enter the third round without a blemish.