The Orioles selected Suarez's contract from Triple-A Norfolk on Tuesday.
The veteran right-hander re-signed with the Orioles on a minor-league deal last week after being designated for assignment and electing free agency, and he's now back in the majors with rosters expanding to 28 players Tuesday. Suarez has been a solid bullpen piece for Baltimore this year with a 3.93 ERA, 1.25 WHIP and 38:19 K:BB over 55 innings.