he American player onto a list of surprise early casualties that includes top-ranked Roger Federer at the Masters Series event. "His aggressiveness is what won him that match," Roddick said. "He took it to me a lot more than I took it to him."
Defending champion Novak Djokovic advanced to the quarterfinals with a 6-4, 6-4 win over Robin Soderling, and second-seeded Rafael Nadal moved on by beating Igor Andreev of Russia 6-2, 7-6 (1).
Four of the top six seeds have been eliminated. No. 2 Nadal looked to have his game well in hand in the first set. Down 15-30 in the first game, Andreev rolled his left ankle. He took a timeout, got medical attention, and continued. Nadal then put him to work.
He kept Andreev on the run and placed his shots in the court with stunning accuracy. Nadal faltered slightly in the second set but ultimately found the energy to move on.
"I played a very good match, 100 percent better than yesterday," he said.
Nadal wasn't troubled by being forced to a second-set tiebreak.
"I know I'm going to have tough sets and tough matches," he said. "So the 7-6 against Andreev is nothing strange. It's completely normal."
With several top players already eliminated, the road to the final has been blown wide open.
"I just pay attention to my matches," Djokovic said. "Having the role of a favorite in most matches I play, obviously I'm put in a lot of pressure. I have a lot of responsibilities and expectations, so it's not easy."
Against Soderling, "I played more or less at the level which was satisfying for me."
Roddick claimed he had not been looking past Cilic at a draw that no longer featured Federer in the way.
"I don't know if I'm playing well enough right now to look ahead in the draw," he said.
Gilles Simon, who upset the top-ranked Federer on Wednesday, advanced with a 6-3, 6-4 win over Jose Acasuso. Fourth-seeded Davydenko became another upset victim Thursday night when he lost 4-6, 6-4, 6-4 to Nicolas Kiefer, and No. 5 Ferrer was ousted soon after with a 6-3, 6-3 loss to 10th-seeded Richard Gasquet.
Eighth-seeded Andy Murray of Britain advanced with a 6-2, 0-6, 6-4 win over ninth seed Stanislas Wawrinka of Switzerland, and No. 7 seed James Blake beat Dmitry Tursunov 4-6, 6-1, 6-4.
Murray said he would have to be on top of his game against Djokovic.
"If I play the way I did in the first set, I have a chance of winning," he said. "If I play like I did in the second set, I'm going to get killed."
Cilic broke an indifferent-looking Roddick in the third and seventh games before taking the first set, despite a shaky 50 percent first-serve percentage.
Roddick rebounded in the second set, perhaps drawing inspiration from a crowd that was firmly in his corner.
"(The) crowd helped him a little bit to get his mental side back," Cilic said.
Roddick broke him in the eighth game and again in the 10th, when Cilic's double fault evened the match and earned a fist-pumping Roddick a rousing ovation.
But the 19-year-old Cilic wasn't fazed. He broke Roddick in the first game of the next set, and Roddick couldn't get it back.
