Matt Cain has the big locker at the end. According to Henry Schulman, Cain has the honor previously reserved for Tim Lincecum and Barry Bonds. If you want perspective about how long Cain has been with the Giants, note that Mike Matheny caught his major league debut, and the opposing starter was Byung-hyun Kim. It's been over a decade, with three championships, an All-Star start, and a perfect game mixed in, and now he gets the big locker.
He's also the fifth starter, tenuously holding onto his job, with young kids impatiently tapping their feet behind him.