Montas (ribs) was placed on the 60-day DL on Sunday, Eric Stephen of True Blue LA reports.
Montas underwent surgery on Feb. 12 to remove his right rib, and it's expected to sideline him for up to two-to-four months. The Dodgers seemed more convinced that Montas would require the long end of that timetable to recover from the procedure, as the move to the 60-day DL ensures that Montas can't be activated before June 2. Newly signed Cuban prospect Yasiel Sierra will take Montas' place on the Dodgers' 40-man roster.