Even ballplayers love chasing after autographs.
Featured above is a vintage, dated October 13, 1965, UPI press photo of Dodger outfielder "Sweet" Lou Johnson flagging down soon-to-be Hall of Famer Harmon Killebrew for his John Hancock prior to game 6 of the World Series. (eBay auction link) Per the descriptor at the top:
Metropolitan Stadium: Autograph hunter is Dodger outfielder Lou Johnson's pregame role as he seeks signature of Twins slugger Harmon Killebrew here. Johnson had just entered the park and was en route to dressing room when he met Killebrew.
As you may know, the Dodgers would win this World Series the following day -- a game 7 match-up that saw Sandy Koufax throw a three-pitch shutout.