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Study claims imaging tests show larger rubber core

Updated: January 3, 2007, 9:08 PM ET
Associated Press

CLEVELAND -- A company that uses computer imaging claims baseballs had a larger rubberized core and a synthetic rubber ring in 1998, including the ball Mark McGwire hit for his 70th homer.

Universal Medical Systems Inc. said Wednesday that with the assistance of Dr. Avrami S. Grader and Dr. Philip M. Halleck from The Center for Quantitative Imaging at Penn State, it took images of 1998 baseballs.

"Examining the CT images of Mark McGwire's 70th home run ball one can clearly ...

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