There's a reason many consider J.J. Watt the toughest defensive end in the NFL.
On Wednesday, he tweeted a picture of a massive bruise he sustained during a game. And it's horrifying.
Throwback to when this happened in the 1st half of the Bills game... pic.twitter.com/2Jspelyjnw
— JJ Watt (@JJWatt) May 21, 2015MORE: Aaron Hernandez involved in prison fight | NFL's worst extra point blunders
During the game against the Bills, Watt recorded five combined tackles and returned an interception for a touchdown in the Texans' 23-17 victory.