Getty Rafael Devers When Boston Red Sox first baseman Triston Casas collapsed on the field after a collision with Minnesota Twins first baseman Ty France on May 2, the team, and its fans, knew immediately that the situation was desperate. Casas suffered a ruptured patellar tendon. Two days later, he underwent surgery to repair the tendon and was officially ruled out for the remainder of the 2025 season . But who would play first base now? Despite having what Baseball America rates as the top