bar stool pundit
A sports fan that relies on the most conventional opinion or intuition to predict the outcome of sporting events. Usually, this involves picking the team with the most popular players because of their assumed superiority over their opponents. The term draws off of drunken, opinionated barflies with antiquated knowledge of the sport in question. (abbrev. BSP)
ESPN.com writer and famous bar stool pundit Bill Simmons: "There's no way Brett Farve will fail to come through in the clutch. 24 interceptions this season? None of that will matter--it's the playoffs. The Vikings will win by 17."