The Blues are riding high on their 2-0 road trip beating the Golden Knights in overtime this past Tuesday and then burying the Ducks, 6-1, scoring three goals within the first 2:06 of the game. 
Following this game, the Blues go home for four games against the Coyotes and Avalanche. Those are much tougher opponents than the Ducks. So it's a clear letdown and lookahead spot for St. Louis.
It sets up an ambush situation for the home Ducks. I expect John Gibson to rebound from his worst game ever. Gibson had been playing great up until that contest. He didn't get a lot of help from his defense in that game. Even with that loss, the Ducks still rank sixth in defense. They also have the fourth-best penalty killing unit. 
Scoring is a major problem for Anaheim. The Ducks, though, should play extremely hard here and they have a strong defense. It's a bonus if the Blues decide to rest Jordan Binnington and go with their backup goalie.