Barry Zito: 'I'm retiring today from baseball' - Athletics Nation

Fans salute Tim Hudson, Barry Zito in nostalgic A's-Giants matchup

The Big Three: Retired former A's stars reflect on life, their careers, regrets and winning it all with other teams - The Athletic

Longtime Bay Area pitcher Zito officially retires

Former A's, Giants pitcher Barry Zito announces his retirement

Barry Zito announces his retirement - Mangin Photography Archive

Casali does it again, lifting Giants past A's 6-5 in 10th - The San Diego Union-Tribune

Stephen Vogt Breaks Down the Pitchers He Worked With - The New York Times

Former Giants, A's Ace Barry Zito Announces Retirement - CBS San Francisco

Giants give big contract to Barry — Zito, that is - Deseret News