Mountcastle (wrist) hit off a tee Friday, Roch Kubatko of MASNSports.com reports.
Manager Brandon Hyde said Mountcastle is making a little progress but did not offer a timeline for his return. This marks the first reported time Mountcastle has swung a bat since going on the injured list Aug. 26 due to a sprained wrist. Ryan O'Hearn has been starting at first base while Eloy Jimenez mans designated hitter most days.