 At the end of the year he fought in the K-2 Grand Prix '93 a tournament held by K-1 for light heavyweight fighters.As the smallest fighter at the event weighing only 75 kg, Changpuek faced Rob Kaman in the fourth (and final) match of their quartet of fights, winning a grueling match by decision.A victory in the semi finals against Tasis Petridis meant a final match against future four-time K-1 world champion Ernesto Hoost.