Elite hitters simply aren’t easy to replace. In a cynical sense, the Red Sox harvested what they needed out of Devers: Signed him out of the Dominican Republic at 16, won a World Series with him five years later, retained him with a nine-figure deal after the embarrassment of the Mookie Betts trade and then moved on.

How have the Red Sox lost so many one-run games? A deep dive into what’s gone wrong and how the club could turn things around.