Originally Posted by Nostradamus
Yes, very hard on the shoulders. even worse than the Dunlop heavy duty balls
Thanks. Well, that sort of does it for me then. I don't want to cause any more issues for my arm/elbow than I have to. Now I can only wonder what the best regular tennis ball would be for a ball machine. I have been using Prince Tennis Balls and loved them, but now I think that company is going through a reorg so there balls are no longer available.