A friend of mine was sitting right next to the guy who threw the ball back. Apparently the guy claims he is neither a Cub fan or a Twins fan. All the fans next to him kept asking why he would throw the ball back and he had no answer for them (I can't imagine that being anyone's first reaction -- "hey, I got a home run ball . . . maybe the players want it back . . ."). I can't explain how stupid it is to go after a home run ball at, apparently, your home ballpark and then throw it back. He received a lot of crap for it the rest of the game. No doubt he'll think before he acts next time! Kudos to the fans who let him know that is not how business is done on this side of town!