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Losers of four in a row and nine of their last 11 games, the first-place St. Louis Cardinals (88-54) look to avoid being swept by the last-place Cincinnati Reds (60-81) at the Great American Ballpark in the finale of the teams' four-game series. Entering play on Sunday the Cardinals have MLB's highest winning percentage at .620, just ahead of the second-place Pittsburgh Pirates (.607). St. Louis holds a 2.5-game lead in the Central division standings with 20 games to go on El Birdos' regular-season slate.