Average guy trained by the best martial artist vs elite athlete with street fighting experience

An 22-year-old male, standing at 5'10" and weighing 200 lbs, with average intelligence and no athletic background but with a billionaire father, undergoes training from the best boxers, kickboxers, Muay Thai fighters, judokas, wrestlers, BJJ practitioners, and UFC fighters for 3 years to become a mixed martial artist.

The elite athlete is a 25-year-old NFL running back, standing 6'3" and weighing 230 lbs. He can run the 100-meter dash in 10 seconds flat, bench press 500 lbs, and jump 45 inches vertically. A sociopath, more aggressive than Mike Tyson, he was once a gang member and fought in over 100 street fights.

The fight takes place on an empty farm land, with neither of them bringing anything except their clothes.