The St. Louis Cardinals said on Monday that All-Star first baseman Albert Pujols will be out 4 to 6 weeks after suffering a non-displaced fracture of his left radius, the forearm.
Pujols had an MRI and CT-scan which helped team doctors assess the injury.
The injury took place during an in-game collision over the weekend.
He was placed in a splint. His left shoulder was sore but there is no structural damage determined at this time, the Cardinals said.
The team will announce a roster move ahead of Tuesday's series opener with the Philadelphia Phillies.
Pujols' previous injuries requiring he be listed on the disabled list include a left oblique strain in 2006 and a calf strain in 2008.