Matz (shoulder) was activated off the 10-day injured list Sunday, Tim Healey of Newsday reports.
The left-hander landed on the injured list at the end of August with shoulder discomfort, and he'll now rejoin the team after recovering for the past two weeks. Matz began the season as a starter before shifting to the bullpen and has a 8.63 ERA, 1.50 WHIP and 25:9 K:BB over 24 innings.