Barry Zito wants to attempt comeback

Oakland A's spring training: Jarrod Parker aiming for June return from injury - Athletics Nation

Zito revved-up after first appearance of 2015 season for A's

Barry Zito - Wikipedia

Giants pitcher Barry Zito explains why he tried to change his delivery in 2007, and how he's found success again – East Bay Times

San Francisco Giants, led by Barry Zito, extend NLCS with win over Cardinals – Macomb Daily

Barry Zito begins comeback with A's

Zito, Giants beat Cardinals

Barry Zito shines in World Series debut for Giants - The San Diego Union-Tribune

Call it a comeback: Barry Zito to throw for teams in January