The Blues were mid-sized to heavy home favorites in each of their last three games - all of which came against the Coyotes. Arizona defeated St. Louis in each of those contests, winning those matchups by a combined four goals. The latest occurred this past Monday with Arizona nipping St. Louis, 4-3, in a shootout.
Now, four days later, the two teams meet in Arizona. Nothing has changed my viewpoint that the Blues are the better team. 
St. Louis dominated 5-on-5 action this past Monday outshooting Arizona, 43-26, while recording 21 hits showing its effective physical style of play. 
So what's been the problem for the Blues? Special teams. St. Louis was 1-for-12 in power play chances the past three games, while Arizona scored on four of 13 power play opportunities during this span. 
The Blues have had three days to work out their special teams issues. They have beaten the Coyotes 10 of the last 13 times in Arizona and are 6-1 the last seven times they were road chalk.