An XFL game looked more like a WWE match on Sunday -- at least for a few moments -- when several players from both teams got into a wild brawl ... and someone's helmet was tossed nearly 20 yards.
The crazy scene happened at the end of the Battlehawks vs. Defenders game in D.C. ... when St. Louis players appeared to be pissed over the way their quarterback, A.J. McCarron, was taken to the ground following a sack.
You can see in broadcast video of the game -- multiple players began piling onto each other .