Astros manager Joe Espada said Tuesday that McCullers (finger) will rejoin the rotation Friday in Baltimore, Matt Kawahara of the Houston Chronicle reports.
Coming back from a blister, McCullers permitted just one run while fanning five batters over five innings in a rehab start with Triple-A Sugar Land last Friday. The right-hander threw 80 pitches in that outing, so he shouldn't have any major workload limitations against the Orioles.