The NFL may create a rule forbidding players with blood on their person from staying in the game.

J.J. Watt continued to play in Week 4 with blood gushing out of the bridge of his nose.

“The NFL does not have a blood rule,” Mike Pereira said. “Hockey has it, college football has it, the NBA has it: If you have blood on your person you’re asked to leave the game and it has to be stopped and your uniform cleaned up. Should the NFL have a blood rule? I think they should. In this day and age of infectious diseases it makes sense, and that’s exactly why all the other sports have gone in that direction. . . . I’d bet you that they address it in the offseason, especially after seeing J.J. Watt.”