From what I can pull, the favorite in week 1 has not covered since 2003. I could not pull stats from before that. Here is what I have
2008 NE -13.5 W no Cover
2007 jax -6.5 Loss
2006 NE -10 W no Cover
2005 car -7 Loss
2004 STL -10.5 W no Cover
2003 Miami - 14 loss
2008 NE -13.5 W no Cover
2007 jax -6.5 Loss
2006 NE -10 W no Cover
2005 car -7 Loss
2004 STL -10.5 W no Cover
2003 Miami - 14 loss

