Originally Posted by
tennisking1
Buy any of them. The rule goes as such.....Use regular duty felt for clay and heavy duty felt for hardcourts. Reason is is that the extra duty felt keeps the hard court surface from destroying the balls so quickly. The reason it isn't so good to use heavy duty on clay is that the clay will get buried in the heavy felt and weight the balls down. So, regular duty on clay and extra duty on hard surfaces. However, the regular duty hits every bit as well on hard courts as it does clay. They just wear out a little faster. Oops, another clay court trick is heavy duty felt on clay as it will weigh the ball down and slow it up a bit and hard hitters and big servers become rather unhappy. Oops, I didn't say that..............