Pittsburgh Pirates closer David Bednar was placed on the 15-day injured list on Sunday due to a strained left oblique muscle.
The move is retroactive to Thursday for the right-hander.
Also on Sunday, left-hander Justin Bruihl was recalled from Triple-A Indianapolis.
Bednar, 29, is 3-3 with 16 saves and a 5.17 ERA in 34 relief appearances. He had a National League-leading 39 saves in 2023.
A two-time All-Star, Bednar is 12-13 with 77 saves and a 3.00 ERA in 223 career relief appearances with the San Diego Padres and Pirates.
Bruihl, 26, has a 6.75 ERA without a decision in six relief appearances this season for Pittsburgh. He is 2-2 with a 4.40 ERA in 78 career appearances (two starts) with the Los Angeles Dodgers, Colorado Rockies and Pirates.