INDIAN WELLS, Calif. -- Andy Roddick ripped one serve at 147 mph, but couldn't overcome his erratic groundstrokes Friday and Rainer Schuettler beat him 6-3, 6-2 in the Pacific Life Open quarterfinals.
Roddick's ace in the eighth game of the opening set was just 2 mph slower than the fastest ever clocked - by Greg Rusedski in 1998 at Indian Wells.
Roddick's serve brought a collective gasp, then a loud cheer from the crowd.
But his serving as a whole was not as dominant as usual, and he managed only four aces against the 27-year-old German who also beat him two months ago in the Australian Open quarterfinals.
The 21-year-old player from Omaha, Neb., made 28 unforced errors - twice the number committed by Schuettler.
Top-ranked Lleyton Hewitt and Vincent Spadea also won quarterfinal matches.
Hewitt, going for his second title in as many events and his second in a row at Indian Wells, beat qualifier Robby Ginepri 6-4, 6-2.
Pressed to three sets in two matches earlier this week, Hewitt was in complete control against Ginepri.
"Nine in 11 days I've won now. That's a lot of tennis," said Hewitt, who took the title Sunday in Scottsdale, Ariz. "I've got that match toughness going now, match-hardened. I'd like to keep it going."
By making it to the semifinals, where he will face qualifier Spadea, Hewitt assured that he will retain the No. 1 spot that he has held since Nov. 19, 2002.
Hewitt seemed unconcerned about the ranking.
"It's nice, but you're going to lose it sometime," the 22-year-old Australian said. "I didn't come to Indian Wells to try and hold on to my No. 1 ranking; I came here to win the tournament."
Ginepri, a 20-year-old from Fort Lauderdale, Fla., was coming off the biggest win of his career, a 6-0, 6-1 victory over Marat Safin. The Russian had flu-like symptoms, however, and obviously was struggling in their third-round match.
Spadea defeated Brian Vahaly 6-3, 6-2 in their quarterfinal that matched two qualifiers.
Top-seeded Kim Clijsters breezed to a 6-3, 6-2 victory over Conchita Martinez in their women's semifinal. Martinez, strong in a 6-2, 6-1 quarterfinals win over Amanda Coetzer, was slowed by blisters on both her feet against Clijsters.
The men's semifinals are Saturday, with both the men's and women's finals on Sunday.