Is the purple Hammer bowling ball Illegal?

Is the purple Hammer bowling ball Illegal? ARLINGTON, Texas – The United States Bowling Congress has revoked approval of Purple Hammer bowling balls manufactured in 2016 and 2017. These model years are removed from the list of balls approved for USBC competition effective March 21, 2022.

ARLINGTON, Texas – The United States Bowling Congress has revoked approval of Purple Hammer bowling balls manufactured in 2016 and 2017. These model years are removed from the list of balls approved for USBC competition effective March 21, 2022.