South Korea produced a pair of double gold medalists in kayak at the Aichi-Nagoya Asian Games on Friday, while a teenage gymnast and the men's 3x3 basketball team captured surprise titles. Kayakers Cho Gwang-hee and Kim Hyo-bin claimed their second gold medals in Japan, as they teamed up for the men's double 500-meter title at Miyoshi Lake Canoe Course in Miyoshi, just east of the main host city, Nagoya. Cho and Kim finished the race in 1:31.859 to beat Taishi Tanada and Masaya Tanaka of Japan by 0.317 second. Cho and Kim, who joined forces to win the four-man title Thursday, became South Korea's first two double gold medalists. Hwang Seo-hyun was crowned the champion in the women's balance beam in artistic gymnastics Friday. The 16-year-old scored 14.700 points to hold off Qiu Qiyuan of China by 0.134. Hwang had the highest degree of difficulty score in the final with 6.6 and received an execution score of 8.100. In fencing, Song Se-ra hoped to join the double gold medal club, but the women's epee individual champion settled for silver in the team event Friday. The men's foil team got the