Topseed, Dechochai had tied with challenger, Shaun Lau at 164 in the first match but lost 26-40 in the 9th and 10th frame tie-breaker forcing a sudden-death decider. In the second match, Lau had a double in the fifth and sixth frames to go ahead one frame when Dechochai had a split in the sixth frame.
But a costly open frame in the eighth frame prove the turning point as the Thai went on to end the match with 184 while Lau could only knock down 178.
Dechochai had topped the earlier 12-game finals with 2618 to move into the stepladder finals as topseed with Lau in second with 2536. Asian Youth Games Masters gold medalist, Basil Low finished third with 2459.