Equipment Rule Changes starting Aug. 1
The rule eliminating balance holes in bowling balls takes effect Aug. 1, the start of the 2020-2021 bowling season. The rule states all holes in a bowling ball must be used on every delivery; any hole not used is considered a balance hole, making the ball illegal. Bowlers may have up to five holes for gripping purposes, and all must be used on every delivery.
Bowlers who do not use their thumb no longer can have a thumb hole, as it now is considered a balance hole. No-thumb bowlers would need to mark a plus (+) sign using a scribe, engraver or tool, near the intended center of palm during delivery.
For balls over 10 pounds, allowable static weights will be three ounces of side, thumb or finger weight.
Click here for an FAQ on balance holes and gripping holes.