Boston Red Sox

Mickey Gasper

DH

Gasper's biceps tendon tore completely off the bone on a swinging strikeout during a Sept. 25 contest against the Cubs. He will be unavailable for the entirety of the postseason, and it's unclear how long the rehab process will take. Assuming health, Gasper should be in the mix for a utility role with the Red Sox again next season after slashing .251/.357/.466 with 10 home runs and a 27:39 BB:K over 67 games in 2026.

Romy Gonzalez

DH

Gonzalez will head back to the minors to help make room on the active roster for the additions Boston made prior to the trade deadline. The 29-year-old utility man has taken a step back in the big leagues this year, slashing just .185/.264/.308 with seven RBI and seven runs scored in 73 plate appearances.

Justin Slaten

RP

The transaction makes space for the return of Garrett Crochet (lat) from the 60-day IL. Slaten had previously been ruled out for the remainder of the season after getting a platelet-rich plasma injection to address degenerative changes in his flexor mass.

Eli White

CF

A 40-man spot was needed for the returning Tanner Houck (elbow), and this was the logical move with White having recently undergone Lisfranc surgery on his right foot. White ends the 2026 regular season with a .246/.289/.398 slash line, six homers, 29 RBI, 27 runs scored and five stolen bases across 204 major-league plate appearances between Atlanta and Boston.

Roman Anthony

LF

Anthony was injured on a check-swing and had to be removed from Tuesday's Game 1 loss to the Yankees. He drove back to Boston after the contest for imaging, which revealed the bad news. Anthony is now ineligible to play before the ALCS, and there's a good chance he is done for the rest of the postseason, regardless of how far the Red Sox advance. Manager Chad Tracy said that Anthony Seigler and Curtis Mead (hand) are the top candidates to take Anthony's spot on the roster.