Mittelstadt scored a goal on three shots in Wednesday's 8-4 loss to the Golden Knights.
Mittelstadt had the only other goal aside from Mikko Rantanen's hat trick for the Avalanche in this loss. The 25-year-old center put up 57 points over 80 regular-season games between Colorado and Buffalo last year, which was enough to earn him a three-year contract to fill the No. 2 center spot in Denver. If he can stay on the top power-play unit, Mittelstadt has a chance to surpass the 60-point mark for the first time in his career, though the Avalanche's shaky wing depth could hinder his even-strength production.