Kjerstad (hamstring) will begin a rehab assignment at Double-A Chesapeake on Saturday, Jacob Calvin Meyer of The Baltimore Sun reports.
Kjerstad has been on the shelf all season due to a hamstring strain he suffered late in spring training. Due to the extensive time he's missed, the 27-year-old could be in line for a lengthy rehab assignment, and there's a real chance that he'll be optioned to Triple-A Norfolk upon his activation from the 10-day injured list.