Impact of Prado's extension 
January, 31, 2013
Jan 31
4:29
PM ET
By Jason A. Churchill | ESPN.com
The Arizona Diamondbacks, as suspected and reported at the time of the trade with the Atlanta Braves last week, have signed Martin Prado to a 4-year extension. FOXSports.com's Ken Rosenthal reports the deal being worth $40 million.
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