The point spread was invented in the early 1940s by math teacher-turned-bookmaker Charles McNeil. It is the great equalizer of the NFL.
In fact, over the last 15 regular seasons, NFL favorites have gone 1,859-1,860 against the spread, with 111 pushes, according to odds database BetLabsSports.com.
Also during that timeframe, 1,890 games have gone over the total and 1,886 have stayed under the total, with 64 games landing squarely on the over/under.
What we're trying to say is that it's very difficult to bet on the NFL. Good luck taking on the oddsmakers who have produced the above results.