After the Yankees’ won their series opener against the A’s on Thursday night, Aaron Boone told reporters that Aroldis Chapman made a change to his posture on the mound after discussing his mechanics and going over film before the game with pitching coaches Matt Blake and Mike Harkey. Chapman had struggled with command during the Yankees’ previous series against the Braves, and before Chapman secured the last out of Thursday night’s game I’m sure there were plenty of fans who feared he would implode on the mound again.
Boone’s remark about Chapman’s meeting with Blake and Harkey reminded me that Twitter user @HoodieGleyber had observed a change in Chapman’s posture, noting that he looked more upright before beginning his windup than he did in his most recent outings in Atlanta.