Training camps are always heated. Football players have been cooped up the whole offseason with no playing time.
On HBO's "Hard Knocks" the Texans and the Redskins got into a few scuffles during their scrimmage together. The main argument happened between Pierre Garcon and J.J. Watt. Why someone would try to square off against Watt is beyond me.
(Warning: The language is NSFW)
Later there was another run in. More words were exchanged and of course players had to be pulled apart.
Can you imagine what it's going to be like once the season actually starts?