Manager Bob Melvin told reporters Sunday that Rafael Devers has been dealing with a groin issue ever since the Boston Red Sox traded him to the San Francisco Giants.

Fitts, who has been pitching at Triple-A Worcester, will join Boston’s taxi squad on an “if needed” basis, sources said Sunday. The Red Sox are bringing him to the West Coast as insurance because there appears to be a pitcher on the roster who is a candidate to be placed on the injured list. That, however, is a possibility and not a certainty.

Rafael Devers hit his first home run for the Giants, connecting against his former Boston Red Sox team just six days after being traded to San Francisco