Basketball size The regulation WNBA ball is a minimum NUMBER@1 inches -LRB- NUMBER@2 cm -RRB- in circumference , which is NUMBER@3 inch -LRB- NUMBER@4 cm -RRB- smaller than the ORGANIZATION@1 ball .

Basketball size The correct size for the ball in ORGANIZATION@2 -RRB- rules is a minimum of NUMBER@1 inches -LRB- NUMBER@2 cm -RRB- in circumference . This is NUMBER@3 inch -LRB- NUMBER@4 cm -RRB- smaller than the ORGANIZATION@1 ball .
