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Melissa Segura: Cuban defector Aroldis Chapman remains a mystery -- and a risk - Sports Illustrated

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Aroldis Chapman throws a pitch 105.1 mph

Doing the math on Aroldis Chapman's fastball

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Unhittable? Aroldis Chapman and His 105-M.P.H. Fastball - The New York Times

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Aroldis Chapman throws a pitch 105.1 mph

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Aroldis Chapman vs Matt Chapman ends with a 103.4 MPH strikeout!

SportsCenter - Aroldis Chapman has tested positive for COVID-19, New York Yankees manager Aaron Boone said. Chapman has mild symptoms, according to Boone.