Baseball free agency is often what separates the the pretenders from the contenders.

In the offseason prior to the 2009 regular season, the New York Yankees spent over $200 million to bring in Mark Teixeira, C.C. Sabathia, and A.J. Burnett. The moves paid off as the Yankees waltzed their to way another World Series title. 

With little more than a month remaining in the 2010 regular season, it’s time to take a look at which 2009 free agent acquisitions paid off the most.

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