Mike CarpThe Red Sox added some depth at a couple of thin positions Wednesday, and they did so by acquiring just one player.

The Sox acquired first baseman/outfielder Mike Carp from the Seattle Mariners on Wednesday in exchange for cash considerations or a player to be named later. In order to make room for Carp (who is out of options) on the 40-man roster, Boston moved outfielder Ryan Kalish to the 60-day disabled list. Kalish is currently rehabbing his surgically repaired shoulder.

The 26-year-old Carp hit .213 with five home runs and 20 RBIs in 59 games for the Mariners last year. He was banged up for much of the year, though, making three separate trips to the disabled list.

Carp was coming off of a fairly impressive rookie season in 2011, where he hit .276 with 12 home runs and 46 RBIs in just 79 games with the Mariners. He also posted a .791 OPS, which was second among American League rookies.

Carp is primarily a first baseman, with 78 of his 173 major league appearances coming at first. He has played in 51 games as an outfielder, though.