Red Sox Designate Luis Guerrero For Assignment

The Boston Red Sox made a move Thursday afternoon to clear a spot on the 40-man roster, as they needed to reinstate several players from the 60-day injured list. To open up room on the roster, the team designed right-handed pitcher Luis Guerrero for assignment, per MassLive's Chris Cotillo.

Guerrero, a 17th-round draft pick in 2021, spent parts of two seasons in the majors with the Red Sox, appearing in 22 games and throwing 27 1/3 innings to a 2.63 ERA. Despite having some of the best raw stuff of anyone in the system, his command and control along with inconsistency held him back during his time in Boston. In his 27 1/3 innings pitched, Guerrero had allowed 16 walks. The 2025 season was when his inconsistency issues were at their worst, as he allowed 14 walks in 17 1/3 innings across 13 games.

Guerrero last pitched for Boston on June 27 against Toronto, when he went 1/3 of an inning and allowed two runs on a walk and two hits. He would be placed on the 15-day injured list the next day for a right elbow strain before being transferred to the 60-day injured list on August 2.

With the DFA of Guerrero along with previous cuts of Isaiah Campbell and José De León, the Red Sox 40-man roster currently sits at 40.