Tennis balls were originally made of wood, but as the game progressed and so did the way it was played, it required changes be made to the equipment as well. Soon enough, people started to make them from leather, and perhaps more disgustingly, hair as well. But since people didn’t bathe much back in the renaissance era of England, when these changes started to take place, nobody probably noticed much.
There were certain things tennis balls could not be filled with it. At least according to the French King, Louis XI. Dirt, chalk, and sand were considered poor materials to make tennis balls out of, and as the game was considered a royal game, it was quite popular among the royals, what the king said went. Various materials have been employed to create tennis balls throughout the years. Often they were au natural, and not the technological influenced synthetics of today designed to improve tennis scores. Sheep intestines, fur from various animals, and wood have all been used to try and create the perfect tennis ball. But for these kinds of balls, they could only really be played indoors since that’s what the designers were working for; tennis was originally only an indoor game played off of walls.
Vulcanized rubber and outdoor matches changed that all in the late seventies. Several other changes occurred in tennis around this time as well, such a reordering and organizing of the rules by which players should play.
Today, tennis balls still have a kind of strict guide for which they must be made, though no king is making the rules about it. They must be between 2.575-2.700 inches and weigh between 1.975-2.095 ounces—very precise measurements. However, tennis is all about precision for the players. It takes an analytical mind to play tennis, to plan for moves and countermoves and to watch the ball with an eagle’s eye. Standardizing the tennis ball only helps to make doing all that easier for a player. For the upcoming Australian Open, though players might not realize it, the changes made to the tennis ball are helping them to make history.