I'm currently reading an interesting book called "Larceny and Old Leather" which deals with the many and varied ways that players and owners have tried to get an edge in baseball (otherwise known as cheating).
We've all heard of players "corking" their bats to try to gain an advantage, where they drill out the center of the bat and fill it with cork. (actually, this does nothing but lower the bat's weight, which they could achieve by simply using a lighter bat.)
But what other materials have players put inside their bats in hopes of getting an edge?
On two occasions, players have broken a bat while hitting the ball to reveal that the bat was filled with:
A. Ping-pong balls
B. Super balls
Give your answer (or guess) in comments.
HeadUsher, please refrain from trying to bring things back to your favorite subject.