The Blues may have lost rookie Vladimir Tarasenko for a bit after Wednesday's 1-0 loss to Colorado. Tarasenko took a shot to the head on a check in the third period. He had to be helped from the ice and television replays suggested he was significantly stunned. He was taken to a nearby hospital for examination. The good news: Tarasenko was on the Blues' plane coming home. Officially, he has an upper-body injury.