recover from a right hip flexor injury sustained in the July 5 match. He said earlier in the week he had recovered. The long layoff showed in several shots hit long or wide, but he remained in control of the match throughout. He never faced a break point, and had eight aces, including the match winner, with no double-faults.
"If I have to have one thing that's rusty that I don't worry about it coming around, it's probably my serve," he said. Twelve of the 16 seeded players were scheduled to play their first match of the tournament on Wednesday.
Although Roddick easily advanced, four seeds were knocked out. Two of the upsets were by former No. 1-ranked players _ Juan Carlos Ferrero defeated fellow Spaniard, seventh-seeded Tommy Robredo 6-3, 6-2, and Australia's Lleyton Hewitt beat No. 15-seed Dudi Sela 6-3, 2-6, 6-2. "He doesn't have the biggest serve out there," Hewitt said. "I was trying to be aggressive.
"I'm trying to get as many tough matches as possible this week and I feel I'm getting better with each match," he said. Two other seeds ran into injury trouble.
Twelfth-seeded Viktor Troicki of Serbia retired in the first set against Frenchman Marc Gicquel due to a right foot injury, and No. 9 seed Mardy Fish of the United States was knocked out by Germany's Philipp Petzschner 1-6, 6-4, 6-1.
It was the first match for Fish since he withdrew from the LA Tennis Open before the quarterfinals on Friday due to an abdominal strain sustained in the Davis Cup. No. 9 seed Mardy Fish of the United States was upset by Philipp Petzschner of Germany 1-6, 6-4, 6-1.
It was the first match for Fish since he withdrew from the LA Tennis Open before the quarterfinals on Friday due to an abdominal strain sustained in the Davis Cup. "It's obviously frustrating to be injured," Fish said. "I thought in practice I could do pretty much everything, and it's just not the case."
Fish said the injury bothers him during his serve _ he had nine double-faults _ and when he stretches for a shot. He wasn't sure how long the injury would affect him or if he would have to miss any tournaments.
"I'll get home, get healthy and get back as soon as I can," Fish said.
Ferrero, a former world No. 1, finished off Robredo with two consecutive aces.
"I was a little bit surprised," Ferrero said. "I expected at the beginning a little bit tougher match, but I was hitting the ball very well today."
Ferrero said he was more relaxed for this match than his opening-round 6-4, 6-7 (5), 6-0 win against Nicolas Lapentti. "I could enjoy the match more today than yesterday," Ferrero said. "For sure."
In other results, No. 11 seed Ivo Karlovic of Croatia had 18 aces to advance 6-4, 7-5 against Germany's Rainer Schuettler, No. 4 Fernando Gonzalez of Chile beat Colombian Alejandro Falla 7-5, 7-5, American Wayne Odesnik beat No. 13 of Russia Igor Andreev 2-6, 7-5, 6-4 and No. 5 Robin Soderling of Sweden won against Russia's Mikhail Youzhny, 6-3, 6-1.