Today, the Chicago Cubs officially announced an eight player swap with the Tampa Bay Rays, headlined by starting pitcher Matt Garza. Although this addition is a welcome improvement to the Chicago rotation, many experts have expressed doubt as to whether Garza has the potential to blossom into a frontline starter. In a recent piece, Fangraphs writer Dave Cameron argues that Garza is only marginally better than veteran Aaron Harang, who recently signed a $4 million deal with the Padres. His final two paragraphs read:Garza is younger, he throws harder, and he’s posted significantly better ERAs over the last several years in the more challenging league, so I understand why the perception of a large gap is there. But the reality is that these two are similar pitchers, and while one of...

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