“Every time he comes to the plate and does something, it’s like, ‘Man, this kid could be elite,’” Diamondbacks hitting coach Joe Mather said. “He could be an All-Star somewhere.

Returning to the staff are Jeff Banister (bench coach, 4th season), Dave McKay (first base coach, 12th season), Joe Mather (hitting coach, 4th season) and Damion Easley (assistant hitting coach ...