(FORTUNE Small Business) – It may not be the Superdome, but last month a bar called Rookie's in Clear Lake, Iowa, hosted an honest-to-goodness professional sports event: a World Championship Arm Wrestling competition. Inspired by the histrionics (and the profits) of the World Wrestling Federation, inventor "Cactus" Jack Barringer launched WCA this September at the same time that he unleashed its chief vehicle: the Enforcer. "It's a machine that levels the playing field for arm wrestlers everywhere," says Barringer, whose contraption eliminates wrist twisting and fingernail digging, and allows for two-on-two tournaments. Barringer operates on a franchise model--individual franchisees sign up with WCA, and bars rent the equipment from it and pay it for the right to host events. Franchisees pay $50,000, for which they get a machine, the guarantee that no competitors will crop up nearby, and--Barringer says--a potential profit of $100,000 per year. So far he's only signed up one taker, but he says he's talking to two more potential clients, and he's hosting his "world championship" in Las Vegas next year. Will bar patrons really flock to watch sweaty men sitting and grunting? Hey, it sounds more entertaining than karaoke night. -- M.O.