Rule 2.2 Ball

Only USHA official balls shall be used in all USHA events.

USHA balls:

1) Material. The material should be rubber or synthetic material.

2) Color. Color is optional.

3) Size. 1 and 7/8-inch diameter, with a variation of 1/32-inch, plus or minus.

4) Weight. The ball shall be 61 grams, with a variation of 3 grams, plus or minus. White label and big balls can weigh less.

5) Rebound. Rebound from free fall, 70-inch drop to a hardwood floor is 48 to 52 inches at a temperature of 68 degrees F.

6) Selection. A ball should be approved by the referee for use in each match in all tournaments. During a game the referee has the authority to change balls if he deems it necessary. Though it is the referee’s decision, he should honor requests when made by both sides or when he detects erratic bounces.

A lighter and/or larger ball may be used for any division provided it is USHA approved and is specified on the entry blank.