Being a tennis player myself, I beg to disagree. Though they have improved in recent years, Penn tennis balls used to be a rather fearsome affair. To those players to whom the game consists of more than just hitting a little yellow ball as hard as one possibly could, Penn balls used to be synonymous with a farewell to a more civilized way of playing the game. As I said, things have changed somewhat. Still, those of us who remember probably won't find it difficult to believe that these little yellow monsters actually are coming after you. ;)

Anyway, Michael S., next time you're chased by a "dinosaur" take this little advice from me: A strong, firm forehand should get rid of that problem. :)