Programming note: Giants-Cardinals coverage starts today at 3:30 p.m. with Giants Pregame Live on CSN Bay Area.
After nine straight starts in center field, Gregor Blanco is getting a day off on Wednesday.
Juan Perez will patrol center field in what will be his first start of the year.
Kelby Tomlinson, who hit seventh, eighth, eighth and sixth over the last four games respectively, will bat leadoff for the first time in his big-league career.
With Andrew Susac behind the dish, Buster Posey is at first base.
Brandon Belt will start in left field for the 12th time this season.