A Failure to Communicate: Why Madison Bumgarner Struggled in Arizona

Bumgarner was unwilling to accept coaching and make necessary changes to compensate for declining skills.
Bumgarner did not trust Diamondbacks staff and resisted attempts to improve his pitching mechanics and repertoire.
The Diamondbacks tried in vain to help Bumgarner evolve as a pitcher, but he remained impatient with the process.
Though Bumgarner's time with the team was contentious, he maintained amiable relationships with teammates.
The Diamondbacks may have misjudged Bumgarner's ability to adapt, calling their decision to sign him into question.