South Korea's Kang Sang-hyun was a surprise winner in the men's under-87 kilograms on the third day of the World Taekwondo Championships ©World Taekwondo

Photo gallery

Kang, right, overcame Croatia's world number two Ivan Šapina, left, in his final ©World Taekwondo
Kang, right, overcame Croatia's world number two Ivan Šapina, left, in his final ©World Taekwondo
Kang, left, was involved in a thrilling three-round semi-final against another unfancied athlete in Iran's Arian Salimi, right ©World Taekwondo
Kang, left, was involved in a thrilling three-round semi-final against another unfancied athlete in Iran's Arian Salimi, right ©World Taekwondo
Turkey's Merve Dinçel added World Championships gold to her European title in the women's under-49kg ©World Taekwondo
Turkey's Merve Dinçel added World Championships gold to her European title in the women's under-49kg ©World Taekwondo
Dinçel, left, salvaged her final against Thailand's Olympic champion Panipak Wongpattanakit, right, in the dying embers of the second round before winning the third ©World Taekwondo
Dinçel, left, salvaged her final against Thailand's Olympic champion Panipak Wongpattanakit, right, in the dying embers of the second round before winning the third ©World Taekwondo
Dinçel, right, knocked out the world number one Adriana Cerezo Iglesias of Spain, left, in the semi-final ©World Taekwondo
Dinçel, right, knocked out the world number one Adriana Cerezo Iglesias of Spain, left, in the semi-final ©World Taekwondo
Italy's Simone Alessio won the men's under-80kg gold despite only winning six points across his semi-final and final ©World Taekwondo
Italy's Simone Alessio won the men's under-80kg gold despite only winning six points across his semi-final and final ©World Taekwondo
Alessio's, left, final against the United States' Carl Nickolas, right, was a low-scoring affair ©World Taekwondo
Alessio's, left, final against the United States' Carl Nickolas, right, was a low-scoring affair ©World Taekwondo
Gold medallist Alessio, right, beat Colombia's Miguel Trejos Salas, left, in his semi-final ©World Taekwondo
Gold medallist Alessio, right, beat Colombia's Miguel Trejos Salas, left, in his semi-final ©World Taekwondo
Nickolas, left, earned a shock semi-final victory against Egypt's Olympic and world bronze medallist Seif Eissa, right ©World Taekwondo
Nickolas, left, earned a shock semi-final victory against Egypt's Olympic and world bronze medallist Seif Eissa, right ©World Taekwondo