With Triston Casas out for the season with a ruptured left patellar tendon, the Red Sox are deciding how to proceed at first base.

Alex Cora doesn't want Rafael Devers to have to learn first base in the middle of a season. Craig Breslow doesn't want Roman Anthony or Marcelo Mayer's development interrupted. So what are the Red Sox going to do at first base?

When you lose a player as important as Triston Casas for the majority of the season, all your plans go out the window. That's the reality the Boston Red Sox are facing now, as Casas is expected to be out for the year with a ruptured patellar tendon in his left knee after leaving Friday night's game on a stretcher. He will undergo surgery.