Although pressurised tennis balls are traditionally used, recently pressureless tennis balls have risen as a strong competitor. Anyone serious about competing in tennis should understand the difference so that they can pick the tennis ball best suited to their needs and skill levels.
At a glance, pressurised tennis balls have more bounce, more spin response and higher speed. They are stored within a tight can to keep their pressure and therefore keep these benefits. However after two to four weeks of being released, the gas inside the balls starts to escape causing the balls to feel heavier and slower.
On the other hand, pressureless tennis balls feel heavier and slower from the start. However over time as the felt wears away and the rubber inside softens, these balls become bouncier- although they never reach the bounce levels of pressurised balls.
So how does someone choose between presureless and pressurised tennis balls? Is either option better? It all depends on what the user wants to do with the balls.
Pressurised balls are best for you if you want to compete in any sort of competitive tennis. Also if you want to practice against another player than pressurised tennis balls are your only valid option.
Pressureless balls are best for you if you are wanting to do rebound practice, because the pressureless balls durability suits this well. Also if you are wanting to practice using a machine, pressureless balls are best because they are cheaper.
Information soruced from Pressureball