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Houston Astros pitcher Roger Clemens throws during the first full(04)

Houston Astros pitcher Roger Clemens throws during the first full(04)

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Image gallery: How Fast Did Clemens Throw?

Explore The Phenomenal Pitching Speed Of Roger Clemens: How Fast Could Roger Clemens Fast Facts CNN Uncovering The Incredible Feats Of Roger Clemens: The Hardest-Throwing New York Yankees pitcher Roger Clemens throws a bat at New York Mets Houston Astros pitcher Roger Clemens throws during the first full