The Tampa Bay Rays placed All-Star closer Andrew Kittredge on the 15-day injured list Sunday due to lower back tightness.
The move is made retroactive to May 19.
The Rays also promoted Dusten Knight from Triple-A Durham and shuffled fellow right-hander JT Chargois (left oblique tightness) to the 60-day disabled list.
Kittredge, 32, owns a 3-1 record with a 3.00 ERA and five saves in 15 relief appearances this season. The right-hander was named as an All-Star replacement last July.
Kittredge is 16-7 with a 3.67 ERA and 14 saves in 165 career relief appearances (15 starts) with Tampa Bay.
Knight, 31, is 0-1 with a 3.24 ERA in 12 appearances (one start) this season with Triple-A Durham.
Chargois, 31, struck out one batter in two-thirds of a scoreless inning of work in his lone appearance this season.
--Field Level Media