With a slow trot and steely nerves, Aroldis Chapman and his fire-hot fastball arrived on Aug. 31, 2010. The eighth-inning trip from right field was much less stressful than the one the 22-year-old Chapman took in 2009, when he defected from Cuba during a game in the Netherlands. Everyone, though, feels a few butterflies once they step onto the diamond. Or do they? As Milwaukee Brewers catcher Jonathan Lucroy stepped away from the plate after Chapman's second pitch, Lucroy knew there would be no debut jitters from this rookie.

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