PHOENIX (AP) - The St. Louis Cardinals have placed pitcher Chris Carpenter on the 15-day disabled list, one day after he had to leave a game with a pulled left rib cage muscle.
Right-handed reliever Brad Thompson also was optioned to Triple-A Memphis, and right-handers Mitchell Boggs and Chris Perez have been recalled from Memphis.
Boggs likely would fill Carpenter's spot in the rotation. Perez was one of three pitchers competing for the closer's job in spring training.
Carpenter was hurt grounding out to third base to end the fourth inning Tuesday night against the Diamondbacks. He called for a trainer after warming up when he took the mound.
Carpenter missed virtually all of the last two seasons with elbow and shoulder injuries. He was the NL Cy Young Award winner in 2005.