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a tennis ball consists of a pressurized rubber core covered with high-quality cloth usually wool mixed with up to 35 percent nylon. balls gradually go soft with use and in tournament play they are changed at regular intervals agreed upon by officials and depending upon such factors as the court surface. balls must have a uniform outer surface and if there are any seams they must be stitchless. the itf specifies that the ball must be yellow or white between 2.5 and 2.8 inches (6.35 and 7.14 cm) in diameter and between 1.975 and 2.095 ounces (56 and 59.4 grams) in weight. the ball must have a bounce between 53 and 58 inches (135 and 147 cm) when dropped 100 inches (254 cm) upon a concrete base.
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$32.99 $41.00
$32.99 $41.00
$100.99 $106.00
$100.99 $106.00
$567.89 $670.20
$567.89 $670.20
$35.89 $42.20
$35.89 $42.20
$57.99 $62.99
$57.99 $62.99
$57.99 $62.99
$57.99 $62.99
$1200.00 $1362.99
$1200.00 $1362.99
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