Rodriguez (knee) had a successful bullpen session Wednesday, the Boston Herald reports.

Rodriguez is scheduled to throw another bullpen session Saturday, one in which he may face live batters. The lefty has checked off some rehab boxes, but he still needs to face hitters, then pitch in a game situation, and build up his pitch count. We're targeting late April for his return. In the meantime, it's looking like Steven Wright will fill in for him in Boston's rotation.