Japan claimed its first track and field gold on Sunday when Keisuke Ushiro ran a heroic 1,500-meter race to win the men's decathlon.Entering the event's final discipline, the 32-year-old defending champ was two points behind Suttisak Singkhon of Thailand, needing to outpace him over the almost four laps of the GBK main stadium to claim gold.By finishing the 1,500 in third, he scored 655 points and built a 69-point final buffer over the Thai. Ushiro's fellow Japanese Akihiko Nakamura won the 1,500 to snatch bronze from China's Gong Kewei."I'm really happy with this," said Ushiro, who won the…READ FULL ARTICLE