Brian Branch has just been suspended for starting that wild brawl after the Chiefs vs. Lions game on Sunday night.
The league announced on Monday it was banning the Detroit star for one contest without pay ... calling his actions, "aggressive" and "entirely unwarranted."
It's not yet clear if Branch has plans to appeal, though the NFL stated it is an option on the table for the 23-year-old.
Branch, as you know, ignited the melee just seconds after Detroit fell to the Chiefs, 30-17, at Arrowhead Stadium.