Why are tennis balls fuzzy?

If tennis balls weren't fuzzy, the game would be too fast to play for today's top players. "You need the fuzziness to provide aerodynamic drag to slow the ball down," says Bill Dillon, director of tennis ball research and development for the Wilson Sporting Goods Company.The fuzziness is the result of the felt that covers the ball. It acts as a dampener by stopping the
 
<p>If tennis balls weren\'t fuzzy, the game would be too fast to play for today\'s top players. \"You need the fuzziness to provide aerodynamic drag to slow the ball down,\" says Bill Dillon, director of tennis ball research and development for the Wilson Sporting Goods Company.</p><p>The fuzziness is the result of the felt that covers the ball. It acts as a dampener by stopping the ball from bouncing too high and from flying through the air too quickly. It also provides more of an effect when the ball is hit with a topspin, backspin or sidespin stroke, especially on a clay or wet surface. But while the fuzz slows down the ball, some top players can still serve the ball at 225 to 240 km/h.</p>
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