With the caveat that I don't know ANYTHING about Oklahoma law and all we have is a short video that probably doesn't tell the whole story...
...In Florida, this would likely be called "mutual affray" even with the serious bodily injury to the football player's eye.
One of the football players shoved one of the brothers. There were clearly words going back and forth. The football players are much bigger guys (and probably in great shape).
If the brothers were charged and I was on the jury, I'd say to the football player your mouth wrote a check your ass couldn't cash, you're lucky, if that was a gang banger instead of a cage fighter you mighta got stabbed or shot, so shup up, take your L, and go home.
Alex.