CHICAGO _ Reliever Pedro Strop will rejoin the Cubs later than hoped after suffering a right groin injury Wednesday.
Strop, recovering from a left knee injury, suffered a slight right groin strain while working out.
The prognosis is that Strop will now return closer to the six-week period after progressing closer to the four-week mark.
Strop tore the meniscus in his left knee on Aug. 10.