Per the Giants website:
"After posting a 1-3 record in his first four June starts, Zito flashed his 2002 AL Cy Young form on Wednesday at Cleveland, surrendering one run and four hits in a season-high 6 2/3 innings as the Giants prevailed, 4-1. Zito's employing a slightly lower arm slot and using a two-seam fastball to his advantage. Zito was 1-0 with a 1.80 ERA in two starts against Chicago last year. But he has struggled at AT&T Park, where he's 0-7 with a 7.34 ERA"