Zito will start the A's Cactus League game on Thursday, reports Jane Lee of MLB.com. Zito is attempting a comeback after taking 2014 off from baseball. The A's have a couple of rotation spots open and Zito has been mentioned as one of several candidates for one of them, but would likely have to show the team a lot in spring to win one of the spots. Zito pitched for the Giants in 2013, posting a 5.74 ERA over 133.1 innings.