03/13/2026
For those of you bowling the USBC Open Championships in Reno this year, the new urethane rules are in effect. If it’s classified as a urethane ball it must be 78 hardness. So on the short list of urethane balls is IQ78, Black Pearl Urethane, Crown 78U, Purple Hammer 78D. The purple hammer hasn’t been released yet. Your older purple hammers are no good this year. Just an FYI when you’re building your bag. Good luck!
USBC announces new national tournament rules regarding slow oil-absorbing high-performance ball use Dave Schroeder September 04, 2025 KEY MATERIALS FAQ Research Report National Tournament Ineligible Ball Lists Video Oct. 23, 2025 update: This story has been updated to reflect changes for USBC Colleg...