The Ultimate NFL Betting System
When it comes to NFL betting systems, there is one that stands out above everything else. The bad part is that it usually only offers one play a year, and has had several years without a single play.
The system is simply to bet against any NFL team that has scored 30 or more points in two straight games, while allowing 10 or fewer points in its last two games, provided the team is playing a non-divisional opponent. That's all there is to it.
UPDATE: The system has had one play in 2008, which was a rare loser on the Washington Redskins +6 against Baltimore, as the Ravens won 24-10.
In 2009, the 49ers easily covered as 13-point underdogs against the Colts, as Indianapolis won 18-14.
There was just one play in 2007, which was an easy winner with the Buffalo Bills +10 against Dallas. The Bills led nearly the entire game before self-destructing at the very end and Dallas won 25-24 on a 53-yard field goal by Nick Folk on the final play of the game.
There was just one play in 2006, which was Arizona +12 over Chicago. Arizona led 20-0 at the half, only to see the Bears storm back for a 24-23 victory. Arizona coach Denny Green was so infuriated that his post-game rant became the basis for a Coors Lite commercial.
Since 1989 the system is 11-0, so while there aren't too many plays, they have come through in the past. Naturally, that isn't any guarantee that any plays in 2008 will be winning ones, but that is certainly the side to be on.

