Someone must have redefined the value of the number 0, because there's definitely considerable chance that a Saints on a 8-9 playoff run under Dennis Allen and Derek Carr are 10+ point underdogs in opening round.
How do I know?
Because who's applying the counter-pressure to bet against the spread?
The fanatical sports fanbase of New Orleans are certainly the most convinced critics and unbelievers in this Saints team nationwide. You'd see a rush of people on this board, including me, betting for any opponent to cover the spread against this team.
National bettors are not going to think Derek Carr's Saints are an undervalued proposition.