Yarbrough (groin) will begin a rehab assignment with Triple-A Durham over the weekend, Adam Berry of MLB.com reports.
Yarbrough threw a successful bullpen session Tuesday, but he will need some additional work prior to being activated. His outing with Triple-A Durham has not been set for an exact date, though Yarbrough would have the chance to enter the big-league rotation as early as April 27 if the team keeps him on regular rest.