Stephen Dobson and John Goddard
A recent popular development in sports betting markets is the emergence of in-play betting where gamblers can post bets online during a sporting contest. Betting products available for ‘live’ or in-play betting include the match result, the exact score and the identity of the next scorer. This market has shown spectacular growth for European football. In a novel contribution in this chapter, the authors investigate the efficiency of the in-play football betting market as applied to exact scores in the English Premier League over two seasons. They compare betting exchange implied probabilities with probabilities generated from a statistical model and find some discrepancies after key events, especially just after a goal is scored or a player is dismissed from the field of play.