The Duke Blue Devils and North Carolina Tar Heels are kinda-sorta rivals, if you haven't heard. It's a timeless battle that always brings out countless supporters of each team, but you just never know who might be a Duke fan.
How about NFL commissioner Roger Goodell?
Duke fan. A McKayla Maroney-inspired Duke fan, at that.
Barry Switzer, former head coach of both the University of Oklahoma and the Dallas Cowboys?
Duke fan? Maybe, just maybe.
The lesson here? No league or sport is safe from Duke fandom.