On Wednesday, against the Texas Rangers, Casas’ replacement, Romy Gonzalez, was attempting to beat out an infield single to third base. He collided with first baseman Josh Smith in the 6th inning and left the game with an injury. According to the team, it isn't anything too concerning, and he's considered day-to-day.

Even with a vacancy at first base, Alex Cora brushed aside talk that Rafael Devers would be an option to shift to first.

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.