USBC UPDATES NATIONAL TOURNAMENT RULES IN RELATION TO PURPLE HAMMER BOWLING BALL
ARLINGTON, Texas – The United States Bowling Congress is aware of a claim that a portion of the Purple Hammer bowling balls manufactured at the Ebonite International plant in 2016 and 2017 may have been produced below USBC’s minimum 72D hardness specification. The Hammer brand was purchased by Brunswick Bowling Products in 2019, and the Ebonite […]