The Boston Red Sox moved reliever Garrett Whitlock to the 15-day injured list Thursday with left knee inflammation, retroactive to May 25. Whitlock last appeared Sunday against Minnesota, where he hyperextended his landing leg during warm-ups. The right-hander received a painkilling injection before Wednesday's start but couldn't continue.

Whitlock has posted a 3.20 ERA across 20 relief appearances this season, serving as a reliable option in Boston's bullpen. His absence creates a gap in the Red Sox relief corps during a crucial stretch of games. Interim manager Chad Tracy confirmed the injury occurred when Whitlock's landing leg slipped on his first warm-up pitch.

To fill the roster spot, Boston recalled left-hander Tyler Samaniego from Triple-A Worcester. Samaniego brings strong numbers, posting a 1.04 ERA in 18 games with the major league club this season. The 26-year-old provides immediate depth while Whitlock recovers.

This injury impacts Boston's bullpen flexibility as they navigate the summer months. Whitlock's 3.20 ERA through 20 appearances highlights his value to the team's pitching staff this season.