PERHAPS THE BEST WAY to begin is with a history lesson. In 1993, before BALCO and the 73-homer season and Bonds on Bonds, Barry Bonds was the best player in baseball by a margin that might modestly be described as enormous. You know how magazines occasionally create anatomical diagrams that piece together parts from different bodies in an effort to produce the ultimate ballplayer? You know how it goes: What would happen if you combined Mike Trout's legs with Miguel Cabrera's hands and Joe Mauer's eyes?
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