Jamaican Usain Bolt dashed to his first Olympic gold in the men's 100m, blistering a world record-breaking 9.69 seconds. The 21-year-old Bolt didn't even use all his strength in final his final strides, while slamming his chest with right palm before reaching the finish line. Bolt said, "I came here to prove that I'm the best in the world. I just came here to win." [Xinhua]