USBC NEWS BULLETIN - EFFECTIVE 8-1-2019

General Playing Rules Rule 18, Bowling Ball Altering Surface
Bowling balls cannot be cleaned with liquid substances or cleaning agents or have any foreign materials on the ball including but not limited to powder, rosin, marker or paint

League Rules Rule 102e, Item 9, Duties of the Secretary

Requires final averages to be submitted to the local association within 15 days of the completion of the league.