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The baseballs are rubbed down by the umpires to take the sheen off the ball . Lena Blackbourne's Rubbing Mud has been used since 1938, and is still used today in Major League Baseball. There is even a can of this mud on display at the Baseball Hall of Fame in Cooperstown, New York. The place where the mud is found in New Jersey is still a well kept secret.

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16y ago

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