Center Paul Stastny will not play because of a lower-body injury he sustained in a 2-1 overtime win at the Toronto Maple Leafs on Thursday. Alexander Steen will move to center on the St. Louis Blues' top line with right wing Vladimir Tarasenko and left wing Magnus Paajarvi. "[Steen] has got lots of experience doing that and part of it is we wanted to try to keep things as close to what we've had lately as possible," coach Mike Yeo said. " ... I think that [Paajarvi] moving onto that side gives them some speed, gives them a worker, and those guys will have a good challenge. They're going to have some tough matchups, you know, especially on the back end I think tonight." The Blues have won the first three games of their five-game road trip, though forward David Perron expects the Montreal Canadiens will offer a tough test to extend their winning streak. "It's a great team over there and we all know they've been struggling a little bit maybe more recently but they're due for a big night one of these days," Perron said. "And we're hoping, first, it's not at against us, but also the way we play to put them on their heels a little bit. And I know they were on the road a little bit so they're going to be excited to come back to their rink and play and we have to have a strong start."