Jankowski (hamstring) will begin a rehab assignment with Triple-A Round Rock on Tuesday, MLB.com reports.

EDGE Analysis

Jankowski felt tightness in right hamstring May 7 and was placed on the injured list soon after. He had a regular role in left field when he sustained the injury, but others have hit well during his absence. Robbie Grossman, Josh Smith and Ezequiel Duran are expected to be in the mix when Jankowski returns.