The Phillies placed right-hander Zach Pop on the 15-day injured list Wednesday with a right calf strain.
The move is retroactive to Monday for the 29-year-old reliever, who has no decisions and a 3.68 ERA through seven appearances this season.
Pop is 8-6 with a 4.83 ERA in 170 career games (one start) with the Miami Marlins (2021-22), Toronto Blue Jays (2022-24), Seattle Mariners (2025), New York Mets (2025) and Phillies.
Philadelphia recalled left-hander Kyle Backhus from Triple-A Lehigh Valley in a corresponding move ahead of Wednesday’s game against the Chicago Cubs.
Backhus, 28, has appeared in four games this season for the Phillies, giving up three runs on four hits in three innings of work.
