Williamson (shoulder) injured his finger while working out, and his rehab program has been pushed back by about 10 days as a result, Charlie Goldsmith of Fox 19 Now Cincinnati reports.
The shoulder injury that sent Williamson to the injured list April 30 remains the primary concern. By the time Williamson completes a rehab assignment and is ready to return from the 60-day IL, the Reds likely won't have a rotation spot available to him, as Hunter Greene (elbow) is expected back from the shelf during the upcoming week.