Wallmark, who will turn 19 in December, went undrafted in 2013 as one of the youngest draft eligible players despite being ranked No. 50 by ISS in their 2013 draft guide. ISS cited his offensive ability and hockey sense as pluses last year, and also responsible in all three zones. He was also deemed the fourth-best faceoff man in the 2013 draft by ISS. The knock on Wallmark seems to be his skating ability
Wallmark had eight points in seven games for Sweden at the Under-20 World Junior Championships last year — where he was arguably Sweden’s best player in the last couple games of the tournament — plus had 10 points in 41 games playing with Lulea of the SHL, Sweden's top league.