Ullmark (6'4", 221 lbs., 7/31/1993) joins the team for his third recall of 2016-17 but has yet to appear in an NHL game this season. With 28 appearances for the Americans this season, the Lugnvik, Sweden native has already matched the total from his rookie AHL season in 2015-16. He has posted a 14-13-1 record and .906 save percentage so far in his second North American season.

Buffalo's sixth-round pick (163rd overall) in the 2012 NHL Draft, Ullmark played in 20 games for the Sabres in 2015-16, posting a .913 save percentage and a 2.60 goals-against average. His 8-10-2 record in 2015-16 included wins in each of his last three NHL appearances.