Fan fights have unfortunately become common during NFL outings, but it's typically not fans of the same team who are throwing down against each other.
That was the case during the Tennessee Titans team scrimmage when "Keep Calm" guy got irritated with Batman guy and landed a swift strike to the throat. Batman guy responded with a swift punch to the face, instantly opening up the floodgates as "Keep Calm" guy bled everywhere.
Who knows who started the fight, but it's a bad look all around. Also, watch to the end as Batman tried to make his escape only to be halted by security.
