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Graphic: Sox in September

The Red Sox are in the playoffs for the first time since 2009, and they bucked another trend: bad records in the month of September. Since their last postseason appearance, the Red Sox had finished at or below .500 in three straight seasons before posting a .640 winning percentage in this season's final month. A look at winning percentages by month for the past four Sox clubs:

Luke Knox/Globe staff

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