Yohan Blake, also of Jamaica, took the silver medal while Justin Gatlin of the United States won bronze. Both set new personal bests with 9.75 and 9.79 seconds, respectively.  Despite his impressive win, Bolt was looking ahead to his next race.  Blog: Day 9 action as it happened  "It means one step towards being a legend, so I'm happy with myself, but it's only one step, I have the 200 meters to go," he said.  On the woman's side, Sanya Richards-Ross of the United States won the gold medal in the 400-meter dash. Christine Ohuruogu of Great Britain took the silver and DeeDee Trotter of the United States won bronze.  Also on the track, double-amputee sprinter Oscar Pistorius, who runs on special carbon fiber blades and is nicknamed The Blade Runner, failed to make the final in the men's individual 400-meter race. He came in nearly two seconds behind the leader in his semifinal heat.  Pistorius is the first person to compete in the able-bodied Olympics using prosthetic legs, and he will also compete in the Paralympics later this summer.  Earlier Sunday, Andy Murray cruised to a gold medal in the men's singles tennis final, beating Roger Federer in straight sets.  Murray conquers Federer for tennis gold  Three times prior, Murray had played Federer in an important final, and three times he had failed. In front of an enthusiastic home crowd, Murray flipped the script on the world's top-ranked player.  "I've had a lot of tough losses in my career, this is the best way to come back from the Wimbledon final," he told a BBC interviewer. "I was a little tired after Wimbledon, but I felt fresh on the court today."  Murray said he had expected a tough match from Federer, who just four weeks ago beat Murray for his seventh Wimbledon title on Centre Court, also the site of the Olympic final.  But after winning the first set 6-2, he broke Federer to take a 2-0 lead. He grew in confidence at that point, he said, and the rout was on.
Jamaican sprinter Usain Bolt defended his title as the world's fastest man Sunday, grabbing gold in the men's 100-meter race by setting an Olympic record with a time of 9.63.Bolt, who became a...