Allen stopped 15 of 17 shots in relief of Brian Elliott (lower body) on Tuesday, ending up with a shootout loss. The Blues led 2-0 well into the third period, but Allen coughed up a pair of goals, including Alex Chiasson's game-tying tally with 41 seconds remaining. If Elliott misses time, the Blues will be counting on Allen to make most of their starts in goal for a period of time.