My friends and I have played outfield for more years than we care remember. We have discussed the flight of the balls hit off Dudley bats as compared to other bats. All of us agree that of all the thousands and thousands balls hit toward us in many games and many, many batting practices, we can't see any difference in the flight of the balls. If the difference in the flight of the balls hit off Dudley bats was HUGE, then the bats would deemed dangerous to fielders and possibly outlawed. Of all the games and tournaments I've been to, not ounce have I heard anybody call out to the fielders, "Watch out! He's swinging a Dudley bat with Spin Grip".