PHOENIX -- The Phillies say there is nothing amiss with Roy Oswalt, who allowed five runs in three innings and 57 pitches before Charlie Manuel removed him.

"His stuff wasn't good," Manuel said. "His velocity was down. I figured there was no sense in leaving him out there."

Oswalt says... nothing.

The pitcher had left Chase Field before reporters entered the visitors clubhouse. It was his second start since developing mid-back spasms in a game at Citizens Bank Park against Florida.

Ruben Amaro Jr. huddled with a team offical during the game and then was seen leaving the manager's office just as reporters entered.

Manuel was asked if Oswalt had indicated a problem with his back.

"I don't know," Manuel said. "He didn't say nothing about that. As far as I know, he didn't say nothing about that."

So what was wrong?

"His stuff wasn't good tonight," Manuel said. "He's usually much better than that."

Oswalt's average fastball velocity was around 91 m.p.h, just as it was in his previous start against San Diego -- the first one since the back injury. That is down from his normal 93 m.p.h. average. After the win vs. the Padres, pitching coach Rich Dubee said Oswalt was not 100 percent and had "gutted" it out.

Oswalt's next start is scheduled for Tuesday -- six days of rest because of two off days (Thursday and Monday).

Catcher Brian Schneider said Oswalt's stuff was fine, he just missed location more than usual. His off-speed pitches, especially, were up in the zone.

"He gave me no indications of [the back being an issue]," Schneider said. "It's something he's going to have to answer. Prior to the game, talking to him, his bullpen, everything was great."

But Oswalt wasn't around to answer it.

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