Make sure if you're going to catch a ball at a baseball game, especially a home run, you have a mitt. One fan forgot his mitt and tried catching on Giancarlo Stanton's home runs barehanded at the 2014 MLB Home Run Derby.
It resulted in this very nasty injury:
https://twitter.com/JJacobson13/statuses/488896459173949441
The fan, Jordan Jacobson, says he didn't even catch the ball either, which adds insult to injury.
