INDIAN WELLS, Calif. - Andy Roddick dominated with his booming serves and defeated Feliciano Lopez 6-4, 6-3 Wednesday in the second round of the Pacific Life Open.

The 20-year-old Roddick, whose serves frequently hit the mid 130-mph range and sometimes go into the 140s, won 24 of 28 points on his first serves and had seven aces against his Spanish opponent. Lopez won 14 of 21 points on his first serve.

The night before, Roddick clocked one ace at 142 mph in a 6-4, 6-4 win over Thomas Enqvist.

Asked the best part of his game against Lopez, Roddick shot back, "Serve."

He added, "But that's something I can normally count on. Outside of that, I feel like I played pretty well."

In other matches, qualifier Brian Vahaly upset third-seeded Juan Carlos Ferrero 6-4, 3-6, 6-3; Gustavo Kuerten knocked off fourth-seeded Roger Federer 7-5, 7-6 (3); top-ranked Lleyton Hewitt defeated Yevgeny Kafelnikov 6-3, 6-2; Marat Safin beat Mark Philippoussis 6-4, 6-3, and James Blake beat Juan Ignacio Chela 6-1, 6-4.

Vahaly's victory over Ferrero was his first against a top-10 player.

"I can't believe it. I almost didn't get into qualifying," the 23-year-old Vahaly said. "I got a call Thursday night at 10 o'clock. They said I'm the worst guy in the qualifying.

"To go from that, I didn't even expect to play. This is my week off. My girlfriend lives in Los Angeles and we figured we'd come down here and give it a shot. I couldn't be happier."

In the women's tournament, fourth-seeded Lindsay Davenport advanced to the semifinals when No. 5 Amelie Mauresmo of France withdrew from their match because of a throat infection.

Davenport next plays second-seeded Jennifer Capriati, who defeated 18-year-old Vera Zvonareva of Russia 7-5, 6-2 in their quarterfinal match.

Davenport, coming off a 6-4, 6-3 victory over Elena Bovina in the fourth round, wasn't particularly happy to get the day off.

"I was looking forward to playing," said Davenport, working her way back from knee surgery. "I feel like right now, in order for me to get better and to improve on my confidence and my game, I need to be out there playing matches, playing the top players. I was obviously disappointed when I heard,"

When she saw Mauresmo, it was obvious she wasn't able to play.

"She looked terrible, sounded terrible," Davenport said. "There's no question she was really sick. It was just one of those things."

On the men's side, ninth-seeded Jiri Novak withdrew from his match against Robby Ginepri because of flu-like symptoms.