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Crasnick: Arrieta all about perseverance and determination

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Why Jake Arrieta is so much better now?

What accounts for Cubs ace Jake Arrieta's rise as one of the best pitchers in baseball? Alex Cora explains.

  • Jerry Crasnick, ESPN.com MLB Sr. Writer Close
    • ESPN.com senior writer
    • Author of "License to Deal"
    • Former Denver Post national baseball writer
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Chicago Cubs pitcher Jake Arrieta has routinely summoned magic this summer with the flick of a wrist.