Between practice and play, the U.S. Open runs through six tons of tennis balls, or roughly 70,000 balls. Wilson, who supplies the “optic yellow” balls to the tournament, estimates that they need 3,900 pounds of rubber and 700 square yards of felt to make their annual shipment to Forest Hills. To insure consistent “bouncability” U.S.T.A. rules dictate that each of the balls in competition must bounce between 53 and 58 inches when dropped from a 100-inch height. For weekend hackers, try dropping the ball from forehead height. It should bounce to around your belly button.
good to know.
— Sep 6, 09:57 PM #