Red Sox Place Willson Contreras On 10-Day Injured List With Left Hamstring Strain

The Boston Red Sox placed Willson Contreras on the 10-day injured list on Monday, a move driven by a left hamstring strain, according to a club announcement reported by MLB Trade Rumors. The transaction removes one of the team’s most established offensive options from the active lineup for at least the minimum IL window.

Contreras, who is listed by MLB Trade Rumors as a first baseman in Boston’s matchup and roster context, will miss games while the hamstring is managed. For the Red Sox, the timing matters because late-season IL turns can compress the margin for error, forcing the club to adjust how often it can play certain infield and lineup combinations.

To fill the vacancy on the 26-man roster, Boston recalled Mickey Gasper from Triple-A Worcester, per the same report. Gasper’s recall is framed as a catcher/infielder option, indicating that the Red Sox were looking for flexibility behind the plate and around the diamond rather than a one-dimensional replacement.

Gasper’s promotion also carries practical roster implications. When a hitter like Contreras is removed, clubs often recalibrate the mix of who can provide at-bats and who can handle defensive assignments, especially in a late-season stretch when opponents can exploit platoon edges and late-inning matchups.

The Red Sox did not provide additional details in the MLB Trade Rumors write-up beyond the diagnosis and roster mechanics. As with any hamstring strain, the day-to-day nature of recovery can affect whether the player returns at the earliest point or needs additional time, so Boston’s next set of lineups will be the clearest indicator of the plan.

For Contreras, the key development to watch is how quickly the team is able to get him back into baseball activities without setbacks. For Gasper, the immediate storyline will be how often the Red Sox trust him in live game situations and what roles he is given as Boston balances the demands of offense, defense, and late-inning replacements.

Boston will next turn its attention to operational depth, particularly at the catching and infield spots. With a roster opening created for this IL stint, the Red Sox’s subsequent moves, if any, could further show how they intend to cover the gap while Contreras is sidelined.