The Colorado Rockies reinstated Brent Suter from the 15-day injured list Wednesday and designated fellow left-hander Fernando Abad for assignment.
Suter, 33, has been sidelined for nearly a month because of a strained oblique.
He sports a 4-0 record with a 2.81 ERA in 31 relief appearances this season -- his first with the Rockies.
Suter spent his previous seven seasons with the Milwaukee Brewers, compiling a 36-19 record and a 3.51 ERA across 196 games (39 starts).
Abad, 37, is 1-0 with a 4.26 ERA in six relief appearances this season with Colorado.
He is 9-29 with a 3.78 ERA in 406 career appearances (six starts) with the Houston Astros, Washington Nationals, Oakland Athletics, Minnesota Twins, Boston Red Sox, San Francisco Giants, Baltimore Orioles and Rockies.