The spitball was not his only method for upsetting batters. "Sports Illustrated"s Joe Posnanski wrote of Perry, "My favorite trick pitch of his was the old Puffball, where he would load up on rosin so that a puff of white smoke would release while he threw his pitches. This was made illegal somewhere along the way (because of Perry, of course), but it's so awesome — it's like the sort of thing one of the villains on the old "Batman" TV show would do."