What they are now calling a head injury which could easily be a concussion which Andy Mcdonald missed 24 games last year for is now headed back to St.Louis to be examined instead of playing Saturday night against the Sharks in San Jose and is very doubtful for Sunday against the Ducks in Anaheim. David Perron has already been out almost a year for this injury and with Mcdonald being the speedster of the team and a first liner with the Caption David Backes and newly added veteran Jamie Langenbrunner this could really effect the blues, but we will see this weekend for sure.