OLYMPIC champion Sebastian Crismanich ended Aaron Cook’s hopes of a medal at the WTF World Taekwondo Grand Prix Final in Queretaro, Mexico this evening.

Dorchester’s Cook, who competes for the Isle of Man, lost his quarter-final clash with the Argentinean 10-7.

London 2012 gold medallist Crismanich led 5-0 at the end of the first round and 8-4 going into the third.

Cook tried all he could in the final round, including a last-ditch head kick, but came up just short.