What was the Saints signature win in 2017/18?

The Falcons on Christmas eve.

That game accurately sums up 2017 in a nutshell. The announcers late in the 2nd quarter make a comment of how the Saints defense is dominating despite the low scoring. Our offense struggled on 3rd down all year and in this game, the defense did what they were doing best most of the season by giving the offense second chances to get it right. We had to grind this game out with Smashmouth offense like we had been doing all year as our strength.

13-0 at half time felt like 24-0 and despite only winning 23-13 that game felt like a 40 burger beat down without being one.

I guess it depends on each individual person's definition of "statement game".

My personal definition is essentially a game where the doubt has officially been eliminated that a team is for real and a legitimate threat to contend for a championship.

I personally don't think it took until week 16 on Christmas Eve for that to happen with the Saints............though that game certainly brightened most of our holidays, for sure.

I guess the "downside" of a good season is that usually it involves multiple scenarios to choose from, when it comes to this sort of thing. Just like in 2009.........there were the Washington and Miami comebacks......not to mention throttling the Giants in a game where both teams were undefeated...........but at the end of the day, most people are gonna say the New England MNF game was the statement game of that season.