The article discusses how to make profitable bets on NFL games by taking advantage of odds fluctuations on Betfair. By analyzing the playoffs leading up to the 2013 Super Bowl, the study shows that there is a strategy to make money regardless of which team wins. The key is to identify opportunities for risk arbitrage based on mean reversion in scores and field position, allowing bettors to secure a profit. This approach involves comparing odds for different outcomes and placing bets that ensure a positive return, even if the initial bet is on a losing team.