Taekwondo Olympic champion Chu Mu Yen of Chinese Taipei lost his semifinal at the 15th Asian Games in Doha on Friday.
Chu, the Athen's Olympic gold medalist, was toppled by Nattapong Tewawetchapong of Thailand 2-1 in the semi-finals.
"I was so disappointed. This was not what I expected for the Asian Games," Chu said, adding that he might not take part in the 2008 Olympic Games after the heartbroken defeat.
"I would think it for a while. I could not make the decision on weather to go to Beijing or not, the new rules clearly are not in favor of me," added Zhu.