But the Red Sox have the depth within their system to find a legitimate outside answer. And remember: the team managed to play .500 ball last year without having a full-time run-producer at first. With an improved rotation, a better bullpen and the addition of Alex Bregman, they should be able to survive.

Casas was removed in the bottom of the second inning after suffering what manager Alex Cora described as a “significant (left) knee injury.”

Boston Red Sox first baseman Triston Casas suffered a ruptured left patellar tendon on a play at first base during Friday night's win over the Minnesota Twins ( BOS 6, MIN 1 ), the team announced on Saturday. The Red Sox are not expecting Casas back this season, as he'll require surgery to repair the tendon.