DeGrom (forearm) threw a 35-pitch bullpen session Monday and could be used in relief by the Mets as soon as late this week, Anthony DiComo of MLB.com reports.

DeGrom might return to the team's rotation before the end of the year, but the Mets may ease him back to active duty through a handful of relief appearances before he progresses to starting. If deGrom has no setbacks from Monday's effort, he'll toss another bullpen session Wednesday and then return to active duty.