The Cardinals' team average rose to .238, and Scott Rolen shot from .200 to .268 on the strength of the first five-hit day of his career.
Before Sunday, Rolen had only 14 total bases for the season. He had 10 Sunday.
"What kind of year was I having? Not so good," Rolen said. "I had room for improvement."
CARDINALS 12, CUBS 9 (10 innings): Albert Pujols clouted his fifth homer, a three-run drive off Chicago Ryan Dempster in the 10th inning. Scott Rolen's two-run triple, his fifth hit of the day, had given the Cardinals a 9-7 lead in the ninth, but the Cubs tied the score on a bloop single off Jason Isringhausen, who blew his first save in five opportunities. Besides Rolen and Pujols, Chris Duncan and Jim Edmonds (hitting his first) also homered.
NOTES AND QUOTES
--SS David Eckstein sat out for the first time Sunday as Aaron Miles replaced him. Eckstein, who normally has to be all but hogtied to miss a game, agreed with manager Tony La Russa's decision after Eckstein had slipped to .227.
--CF Jim Edmonds started for a third straight day Sunday for the first time in the regular season. The club had been careful with Edmonds after he had shoulder and toe surgeries after last season.
--RHP Russ Springer got the final two outs Sunday, but he didn't receive credit for a save. His last save was nearly six years ago, April 24, 2001.
--Cardinals pitchers have allowed 15 first-inning runs, seven by RHP Anthony Reyes, which represent the most they've allowed in any inning.
BY THE NUMBERS: 3 -- Number of Cardinals homers not hit by LF Chris Duncan or 1B Albert Pujols before the team banged four on Sunday.
QUOTE TO NOTE: "We deserve more than we're getting, but that's just the rut you get into sometimes." -- Manager Tony La Russa on his team's slumping offense prior to Sunday's explosion.