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The St. Louis Cardinals appeared on the verge of surrendering the second wild card after losing five of six earlier this month, but they have exploited a pair of bedraggled division rivals to solidify their position and move closer to a postseason berth. St. Louis has won three straight and seven of eight to open a 3 1/2-game lead over the Milwaukee Brewers and Los Angeles Dodgers in the wild card chase. Four of the wins have come against the Houston Astros.