MOSCOW Over 10 hurdles, David Oliver had no trouble.
Stepping past a tiny steel beam jutting from the floor at Luzhniki Stadium soon after winning a gold medal? That proved more difficult.
His trouble began after his nearly flawless performance in the 110-meter hurdles Monday night at the world championships. Oliver tripped and tumbled but quickly picked himself up and rubbed his stinging knee. But his comedic touch was intact: At least, he said, his misstep happened after the race.
For years, injuries have hampered Oliver. But it all came together when he won in 13.00 seconds, just ahead of teammate Ryan Wilson (13.13).
Had it not been for a trip over the final hurdle, defending champion Jason Richardson could have third place. But his stumble opened the door for Sergey Shubenkov of Russia to slip into the third spot.
"This feels great, man, coming out here and finally performing well again," said Oliver, a former football player at Howard. "I was tired of being injured. I was tired of failing. I was tired of running like a donkey. It's just not good when you're not winning."
Shelly-Ann Fraser-Pryce wouldn't know anything about that, cruising to the women's 100-meter title. The two-time Olympic champion is just as dominant these days as Jamaican teammate Usain Bolt.
Fraser-Pryce took off out of the blocks, and there was simply no catching her. She finished in a world-leading time of 10.71 seconds. Murielle Ahoure of the Ivory Coast was second, and defending champion Carmelita Jeter of the United States placed third.
Wearing pink shoes and matching hair extensions, Fraser-Pryce was hard to miss. And given all her wins, it's hard not to compare her to Bolt.
"I compare myself to nobody," Fraser-Pryce said. "What Usain has, he has. What I have is hard work."
Hard work has been Oliver's calling card. A calf injury slowed him at the Olympic Trials last season and prevented him from making the U.S. squad for London.
Oliver, an Olympic bronze medalist in 2008, decided to do things differently. There would be no more weightlifting for the big and strong hurdler, no practicing on Wednesdays and no more than four or five repetitions at anything he did on the track.
"I hit the reset button," Oliver said. "With all those injuries, a lot of changes had to be made. Now, I can sit back and celebrate being a world champion."
So can Great Britain's Christine Ohuruogu. She never led in the 400 meters until the last moment to beat defending champion Amantle Montsho of Botswana by four-thousandths of a second (49.404 to 49.408). She set a British record to regain the world title she first won in 2007, dipping at the line to cap a great comeback.
"When I finished, I didn't know if I'd won it," Ohuruogu said. "I didn't want to get over-excited until my name came up."
Montsho said she was beaten by an elementary error thinking she had won before crossing the line.
"I did not see Christine coming from behind," Montsho said. "If I knew that, I would push my chest forward and would have made it."
In other events:
Shot putter Valerie Adams of New Zealand became the first woman to win four straight individual world titles, posting a mark of 68 feet, 6 inches.
Raphael Holzdeppe of Germany upset Olympic champion Renaud Lavillenie of France to win the pole vault. Both cleared 19-3 3/4, but Holzdeppe won on fewer misses.
Ganna Melnichenko of Ukraine led the heptathlon after four of seven disciplines with 3,912 points, followed by the Netherlands' Dafne Schippers (3,837) and American Sharon Day (3,836).