Going into today’s start against the Marlins, Barry Zito has been incredible. He is 4-0 with a 1.53 ERA and 0.88 WHIP in 35.1 IP. That is far from the Zito Giants fans were used to seeing from 2007 to the first half of 2009.

How did Barry Zito make this transition from “major” disappointment, to “rebounding” stud?

Here are five aspects that have contributed to Zito’s success from the second half of 2009 to now.

(Information courtesy of Fangraphs.)

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