Originally Posted by Frank Silbermann
I prefer tennis balls that are well-used but still lively. E.g., recently opened, but already used for a couple of sets. They're easier on the arm and actually faster.
There's a lot of fails there.
1) If it's well-used then it ain't lively anymore.
2) They're not "recently opened" after a couple
3) They're not easier on the arm because of the false sense of "I can hit as hard as I want and it won't fly out".
But they may be faster due to the fact that they don't bounce. If I know I'm playing with dead balls, I'll run around all of my forehands and use my backhand slice instead.