Jake Peavy, the Padres' best hope of overcoming significant odds and advancing in the postseason, learned he had at least one broken rib in his right side after his start against the St. Louis Cardinals in yesterday's first game of the National League Division Series. He will miss the remainder of the postseason.

Peavy had the worst start of his season, allowing eight runs in just 41/3 innings and taking the loss in the Cardinals' 8-5 victory. Padres officials weren't sure when Peavy suffered the injury, but he suggested that it occurred six days ago, when the team was celebrating its NL West title.

X-rays taken at Busch Stadium were negative, but an MRI exam administered at Barnes-Jewish Hospital revealed a break in the eighth rib on Peavy's right side. Peavy was to undergo further tests to determine whether his ninth rib was broken as well.

Cramping Shortens Carpenter's Day

Cardinals starter Chris Carpenter threw a few warmup pitches before the seventh inning, stretched his right hand, called for the athletic trainer and came out of the game. The Cardinals said Carpenter left with cramps resulting from dehydration, which Carpenter found surprising since he drank lots of water both Monday night and yesterday prior to the game, which was played in 84-degree heat.

He is expected to be ready for his next start.

Mazzone Endorses Perlozzo

Count Atlanta Braves pitching coach Leo Mazzone as someone who endorses Baltimore Orioles interim manager Sam Perlozzo. The two are best friends.

"I know he can manage in the big leagues and manage successfully," Mazzone said. "He handled the situation extremely well as far as I'm concerned. He did a hell of a job."

Svrluga reported from St. Louis, Arangure from Atlanta. The Associated Press contributed to this report.