"I came from the other end of the globe and I'm still a little jet-legged, but it's all good now," Gonzalez said. He will face Mikhail Youzhny.
Fifth-seeded Gael Monfils cruised past Martin Vassallo Arguello 6-4, 6-2 to advance to the quarterfinals where he will play top-seeded Nikolay Davydenko.
"Davydenko likes to dictate the match, playing close from the baseline," Monfils said. "I need to change the rhythm as much as I can."
Joining Monfils in the final eight is Richard Gasquet, who defeated Joachim Johansson 4-6, 7-6 (1), 6-2. Gasquet will play Fernando Verdasco, who defeated Karol Beck 6-4, 6-0.
Tomas Berdych stopped Simon Greul 6-3, 4-6, 6-3, and will take on French Open finalist Robin Soderling.
Davydenko advances, Ferrer falls in CroatiaKone open to loan switch
