Elliott came into the game leading the league in goals-against average (1.45) and save percentage (.947).
He made 25 saves in helping St. Louis improve to 12-2-3 under Coach Ken Hitchcock. The Blues won their fourth straight and handed the Rangers their second consecutive loss.
New York, which scored 10 goals in back-to-back wins over Florida and Buffalo, has managed only one in its losses to Dallas and St. Louis. Henrik Lundqvist gave up three goals on 35 shots.
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