PARIS — Panipak Wongpattanakit retired on a perfect note as she became the first Thai athlete in any sport to become a two-time Olympic champion on Wednesday.
Wongpattanakit defended her Tokyo Games title to secure Thailand's first gold medal of the Paris Olympics and Park Tae-joon restored South Korea's pride on the opening day of the taekwondo competition.
Wongpattanakit, who confirmed she will end her career, celebrated the gold by grabbing a Thai flag after jumping into her coach's arms.
''I have so much pain,'' she said on the eve of her 27th birthday. ''I had a broken knee. And my ankle, my hip... Now, I have to retire.''
Wongpattanakit, who comfortably won her three opening bouts to reach the final of the 49-kilogram category, trailed in the first round against Guo Qing of China but rallied with two consecutive kicks to the body and head.
Guo fought back to force a decider, but Wongpattanakit prevailed after video reviews showed that she had successfully landed two spectacular head kicks.
Under the new rules introduced in Paris, bouts are decided on a best-of-three format rather than cumulative points.
Taekwondo is South Korea's national martial art, and the country suffered a humiliation in Tokyo, where it failed to win a single gold medal for the first time since the sport became a medal event in 2000.