The Pittsburgh Pirates placed left-hander Ryan Borucki on the 15-day injured list on Sunday because of left triceps inflammation.
In a corresponding move, the Pirates recalled left-hander Jose Hernandez from Triple-A Indianapolis and activated him for Sunday's game against the Baltimore Orioles.
Borucki, whose move to the IL is retroactive to Saturday, has four relief appearances this season. The 30-year-old has a 5.40 ERA after allowing 4 hits, 2 runs and no walks with six strikeouts in 3⅓ innings.
Hernandez, 26, was with the big league club March 28-31, throwing two scoreless innings in two games and recording his first major league career save March 28 against the Miami Marlins.
Infielder-outfielder Ji Hwan Bae, on the 10-day IL since March 28 (retroactive to March 25) with a left hip muscle strain, is slated to start a rehabilitation assignment Sunday with Single-A Bradenton.
Bae, 24, missed most of spring training because of the injury.