Wayne Lincoln, trading spokesman for Sporting Index, explains: "The Six Nations brings the punters out. It's on terrestrial TV and on at a punter-friendly time in the afternoon at the weekend. But the market comes late. It'll be the Thursday before they start coming at us, and the big bets can come very, very late. If it's a good tournament, they'll keep coming at us right up to the last game. It gets very popular."