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Aroldis Chapman - Wikipedia
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Did you know that on September 9, 2010 Aroldis Chapman became the MLB record holder for fastest pitch ever thrown… | Aroldis chapman, Cincinnati reds, Reds baseball
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Aroldis Chapman and the 15 Fastest Pitches Ever Recorded | Bleacher Report | Latest News, Videos and Highlights
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Nolan Ryan's record 108 mph fastball
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WBSC - World Baseball Softball Confederation
Aroldis Chapman - Wikipedia
Baseball's 106mph barrier: have pitchers reached the limits of their velocity? | MLB | The Guardian