Fiers pitched strong through seven innings, but it wasn't enough as Adam Wainwright posted his 19th win, pitching a shutout Wednesday night as the St. Louis Cardinals beat the Milwaukee Brewers 2-0 to hold their 2 1/2-game edge in the NL Central. [...] it's hard to say. [...] we saw the first inning, I wasn't sure what was going to happen. Wainwright (19-9) worked around seven hits and tied for the major league lead in wins and shutouts. Wainwright struck out seven and walked two in his ninth career shutout. Cardinals: RHP Michael Wacha, whose last start was skipped after he struggled in his return from a shoulder injury, is scheduled to start Saturday against Cincinnati. In those two losses, in which he lasted four innings both times, Lohse gave up 14 runs on 13 hits, including four homers. Shelby Miller (10-9, 3.75) has given up one earned run over 20 innings in three starts this month.