Great Britain U20 let a two-goal lead slip before losing 5-4 to Korea after penalty shots at the World Championship Division 2A tournament in Brasov on Thursday.
Alex Graham scored twice and now has three goals in the tournament, but it was a first defeat for GB after victories over Spain and Lithuania earlier in the week.
Jack Goodchild and Jack Hopkins were also on target as GB collected a point to remain on course to secure a medal.
Head coach, Martin Grubb, said: “Today was a tough loss for us and the most disappointing part is we just didn’t manage the game after throwing away a two-goal lead twice.
“We got ourselves in a good position after both the first and second periods and we just didn’t come out with any sort of intensity in the third.
“We looked really leggy and in the end we knew the Koreans wouldn’t stop. We got punished by a hungrier team.
“We really need to get over this quickly and keep focused on the fact we need two regulations wins to give us the best possible chance of success.
“We cannot feel sorry for ourselves. We need to dust ourselves down, learn a harsh lesson and make sure we do our job against Romania.”
GB face Romania on Friday (face-off 6.00 pm UK time)
(Image permission: Bogdan Balas)