Two teams expecting key pitchers to be ready for their regular duties clash Saturday afternoon when the St. Louis Cardinals and San Francisco Giants lock horns for the third time in their four-game series. The clubs have split the first two games, with the Cardinals doing pretty much all the hitting in an 11-2 shellacking on Thursday night, before the Giants got the better of a pitchers' duel in a 3-2 victory on Friday. Two days after watching Johnny Cueto get rocked in his return from the disabled list, Jeff Samardzija is expected to make his first start for the Giants since May 29.