Barry Zito of Oakland Athletics announces retirement - ESPN
Haves and have nots: Revisiting some of baseball's biggest
It's been almost ten years since Barry Zito left SF. What do you
Barry Zito - Wikipedia
How former A's ace Barry Zito unplugged, rewrote his Giants
Predicting the Next Retired Number for Every Team - The Crawfish Boxes
Barry Zito Announces Retirement - MLB Trade Rumors
Barry Zito posts incredible tribute to former teammate Buster
Former A's ace Barry Zito parts with Pasadena cottage for $1.495
Posey, Lincecum won't attend SF Giants 2012 World Series reunion