I’ve done it in such a variety of ways and splitting bets with buddies that it’s become a giant pain to figure out the net profit, but it has been relatively good——it’s definitely not getting me to retire anytime soon. You learn where a lot of the randomness is (heavyweights who can kill each other in a single hit), and where people are able to have asymmetric control of the fight (overwhelmingly dominant wrestlers determining where the fight takes place). Betting on the better wrestler who isn’t extremely outclassed on the feet will probably get you close to +EV.