The Cardinals placed Carpenter on the 10-day injured list Thursday with a right oblique strain, Derrick Goold of the St. Louis Post-Dispatch reports.
Carpenter's move to the injured list is retroactive to Tuesday, so he will be eligible to return beginning April 12. The 38-year-old has played in just three of St. Louis' seven games so far, but losing him is another hit to the Cardinals' depth, as the team is already dealing with a handful of injuries to begin the year. Pedro Pages was recalled from Triple-A Memphis in a corresponding move.