Quote Originally Posted by 3arod13 View Post
What is deadwood?
From the MastroNet Reference And Price Guide For Collecting Game Used Baseball Bats by Dave Bushing and Dan Noll:

"Checking (deadwood): Refers to the grain separation, usually about the barrel, caused by repeated connections in the same area with the ball (or by dry and aging conditions). Raised wood is evidence of game use, as the wood separates due to contact with the ball on the bat's hitting surface."

Hope this helps.