Visit any online discussion about MMA and one will come across hypotheticals about how “A-plus” athletes from other sports would do in a cage. How would LeBron James fare in the Ultimate Fighting Championship heavyweight division? What about someone like Karl Malone, a generation earlier? But the most common version, by far, is speculation about American football players. After all, football is a sport that blends raw physical strength with speed and agility, served with a hearty helping of violence. The very question seems to imply that the athleticism of footballers, who are paid tens of millions of dollars, must be vastly better than that of mixed martial artists, since some UFC champions make a meager $200-300k per outing.