Closer Zach Britton, who is continuing to progress from a left forearm strain that landed him on the DL over the weekend, is scheduled to receive a precautionary MRI on Friday after the team returns home. Showalter said the club always planned to perform an MRI on Britton once the road trip ended. "We were going to get one when we got back just to make sure," Showalter said. "We just probably thought it would be a good idea to get that done. It's moving along." ... Pitching prospect Hunter Harvey, who is recovering from Tommy John elbow reconstruction that was performed July 26, threw off a flat mound for the first time Wednesday. ... Catcher Welington Castillo took a foul tip to his palm in Tuesday's game, but he was back in the lineup Wednesday.