WHOA! That was incredibly dangerous! What an idiot! Blunt force trauma to a childs chest (like say a baseball hit 400 feet in the air) can cause irregular/sporadic heartbeats and may cause heart failure. I hope proper medical attention was given to the "fan's" toddler. Had a suspicion this type of moron would eventually show up at a game looking to get on ESPN's Top Plays or something equally irrelevant.