Liam Pitchford saw a two-game lead evaporate as opponent Lim Jonghoon turned the tables to knock him out in the last 16 of the WTT Star Contender Doha.
It looked well set for the England No 1 and seventh seed as he won the first two games 11-6, 11-9, but world No 48 Lim, from South Korea, built leads in all of the next three games and eventually won it 3-2 (6-11, 9-11, 11-7, 11-7, 11-6) on his second match point.