Barry Zito – Society for American Baseball Research

Barry zito 2003 hi-res stock photography and images - Alamy

Rocky Colavito – mlbblogger

Barry Zito - Baseball Stats - The Baseball Cube

Even though stats count, teams find value in chemistry

At the MLB level, if a pitcher unintentionally hits a batter, does he apologize? - Quora

3,558 Athletics Barry Zito Stock Photos, High-Res Pictures, and Images - Getty Images

100 Things A's Fans Should Know & Do Before They Die (100 ThingsFans Should Know): Slusser, Susan, Beane, Billy: 9781629370682: : Books

Frank Crosetti – mlbblogger

July 15, 2003: Hank Blalock's blast gives AL 9-7 win in the All-Star Game 'that counts' – Society for American Baseball Research