Magnus Paajarvi was placed on injured reserve Wednesday by the St. Louis Blues with an upper-body injury.
Paajarvi, 22, was hurt in the first period of a 6-1 win against the Nashville Predators on Saturday and missed the rest of the game.
In four games this season Paajarvi is scoreless. A first-round pick (No. 10) in the 2009 NHL Draft, he was acquired from the Edmonton Oilers in an offseason trade for forward David Perron.