Jackson, 26, got a bit of playing time for the St. Louis Cardinals in 2012 and 2013 and hit .083 in 24 at-bats. Over six minor league seasons, Jackson, primarily a shortstop, has hit .268 with 27 home runs and 203 RBIs. He was drafted by the Cardinals out of the University of Miami in the fifth round in 2009.
The Dodgers still have four spots left on their 40-man roster. One opened Monday when lefty reliever Scott Elbert elected to become a free agent rather than accept a minor league assignment.