Rules for Football Score Prediction Games

I've already done a few of these, so I figured I needed to go ahead and lay down some ground rules:

1.  The team you called as the winner has to win.
2.  Closest score will be calculated by the following:

Example: you call 30-10 Saints win.
Final score: 24-3 Saints win.
You were off by 6 points in the Saints score and 7 points for the opponent score.  Making it a total of 13 points off the final score. Whoever has the lowest amount of points from the final score, wins.

Simple enough me thinks.