Roddick, who had 22 aces, was tied at 5-5 in the tiebreaker when he challenged a call. The decision was overturned, giving the American a set point and taking away a match point for his 117th-ranked opponent.

"I've been a big supporter of Hawk-Eye and today is the reason why," Roddick said of the device used for replay challenges. "There's a big difference between being down match point and up set point. Needless to say, I would have been a little perturbed if they'd have got that one wrong."

Bogdanovic also benefited from the replay system. Trailing 5-4 and facing a set point, he challenged a fault and Hawk-Eye showed that it was an ace.

"I though Alex played a good match," Roddick said. "He kept the pressure on me from the first ball and I was lucky to get out of there today."

Fernando Gonzalez of Chile also advanced, beating Robby Ginepri of the United States 6-2, 7-5. Croatian qualifier Marin Cilic defeated Jo-Wilfried Tsonga of France 4-6, 6-3, 6-2.

In the second round, eighth-seeded Marat Safin beat Sebastien Grosjean of France 3-6, 6-4, 6-4 in a match that had been suspended overnight.