The Boston Red Sox will not have their starting first baseman for the rest of the 2025 Major League Baseball season. Triston Casas suffered a serious knee injury that will keep them out of action for the rest of the season.

Rafael Devers entered the season under a cloud of controversy due to his disinterest in moving from third base to designated hitter. Now he's balking at another move. The longtime third baseman has been a full-time designated hitter this season,

The Red Sox announced Sunday that Casas had suffered a ruptured patellar tendon during a Friday win over the Minnesota Twins. Casas, who was limited to 63 games in 2023 after suffering torn cartilage in his rib cage, had batted .182 with three home runs and 11 RBIs in his first 29 games of the 2024 season.