Miami placed Bryan Morris on the 15-day disabled list Thursday with lumbar disc herniation, the club announced.
Morris, 29, pitched to a 3.06 ERA and 6.43 FIP over 17.2 innings. He was a consistent member of the Marlins' bullpen last season, pitching to a 3.14 ERA and 3.64 FIP over 63.0 innings.
The move is retroactive to Wednesday.
In the corresponding roster move, the Marlins recalled Nick Wittgren from Triple-A New Orleans.
Wittgren, 24, pitched to a 3.18 ERA and 5.74 FIP over 5.2 innings in an earlier stint with the Marlins this season.
Morris joins lefty Mike Dunn as Marlins relievers on the disabled list.