Jeff Sagarin Ratings

Does anyone use Jeff Sagarin's CFB ratings from the USA Today as a guide to calculating their own point spreads?  I used it last night on games where the difference was 7 points between the book's spread and Sagarin's spread.  I ended up 2-1

Flo Atl +14 won outright 32-31
Eastern Washington covered +28.5 against Nevada 49-24
North Dakota didn't cover +20 against Idaho 45-0

Tonight's play would have been Villanova +4.5 at Temple, but I didn't get a chance to get a wager down. 

I'll be updating my program week to week with Sagarin's ratings.  If anyone is interested in tailing this, let me know and I'll post some plays. 

PS  No I have not back tested this.  This is the first year I'm doing it.