Diamondbacks Hire Joe Mather as Hitting Coach The search for a new Arizona Diamondbacks hitting coach is over. Thursday afternoon, the team announced the hiring of Joe Mather, who served as the assistant director of hitting for the Cincinnati Reds over the past two seasons. Mather will be coming home, as he is a 2001 … Continue reading Joe Mather, Phoenix-area High School Graduate, Is New Diamondbacks Hitting Coach