The longtime third baseman eventually agreed to move to designated hitter this season and is now refusing another position switch.

Rafael Devers is displeased with the Boston Red Sox asking him to play first base with Triston Casas expected to miss the rest of the season after suffering a ruptured patellar tendon in his left knee.

Speaking to reporters Thursday, Rafael Devers said he won't move to first base and vented his frustration at the Red Sox's front office.