It's the first time the 22-year-old has been summoned to the NHL. The emergency basis means either Jhonas Enroth or Michal Neuvirth is sick or injured. Lieuwen has excelled with the Amerks this season. The organization originally expected him to merely compete with Connor Knapp for the backup job, but he's wrestled the starting role away from Matt Hackett. Lieuwen, drafted in the sixth round in 2011, has appeared in 32 games with a 17-11-2 record, 2.34 GAA and .922 SV%.