Bowling is a sport where a weighted ball is rolled down an alley and is aimed at a target of ten pins. The goal being to knock over all 10 pins in the first role. The Professional Bowlers Association (PBA) regulates the bowling balls that can be used in PBA Tour competitions.  With nearly 4,300 members representing 13 countries, the PBA considers itself the “major league” of bowling in the world.  In addition to size and weight, the PBA rule for bowling ball specifications also covers balance, holes, surface, plugged equipment, gripping materials, and damaged equipment.

The International Table Tennis Federation (ITTF) is the governing body for all national table tennis associations.  As such, the ITTF oversees the rules for the sport. ITTF rules regarding the physical specifications of the ball and the replacement of damaged balls are used by USA Table Tennis.

USA Table Tennis (USATT) is the national governing body for the Olympic sport of table tennis in the United States.  It is affiliated with the International Table Tennis Federation(ITTF).  The laws imposed by USATT conform substantially to the International Table Tennis Federation ITTF Laws and Regulations for International Competition.