Azarenka, at No.4 the second-highest seed left in the draw now, stormed into the second week with a 63 62 win over No.30 seed Roberta Vinci. Vinci didn't even play badly - she had a solid +4 differential (18 winners to 14 errors); but Azarenka was just that much better with +10 differential (20 winners, 10 errors).

"She started really well and it took me a few games to adjust, because she has a little bit of an unusual game but very, very solid for clay," Azarenka said. "I think I adjusted really well and really started to dominate. I'm happy."

With No.1 and No.2 seeds Caroline Wozniacki and Kim Clijsters out of the draw, Azarenka and No.3 seed Vera Zvonareva are the on-paper favorites for the title. But Azarenka isn't looking any further than her next match.

"I know I'm the No.4 seed, but that's just a number," she said. "If those players lost, you should give credit to their opponents. They must have been pretty damn good. So for me, I just look one match at a time. I know my next opponent - they play soon, and I'm going to watch a little bit. It's never easy."

Awaiting Azarenka in the 16s will be big-hitting lefty Ekaterina Makarova, who saved two set points at 3-5 second set to upset No.16 seed Kaia Kanepi, 64 75. Makarova is in the second week of a Grand Slam for the second time, her first coming at this year's Australian Open (where she lost to Kim Clijsters).

Azarenka leads Makarova in their head-to-head, 2-1. Makarova won their first meeting at Eastbourne last year; Azarenka has won their last two, at Sydney and Indian Wells this year, although in Sydney, the Russian led the Belarusian 3-1 in the third set before ultimately falling 6-4 in the third.

Another round of 16 match that was set up early Saturday was an all-Top 10 match-up between Li Na and Petra Kvitova. No.6 seed Li rolled past Sorana Cirstea, 62 62, while No.9 seed Kvitova overpowered Vania King, 64 62.