Weeks after completing a one-year ban for missing doping tests, Christine Ohuruogu won a 400-meters world title.
Ohuruogu, who ran 49.61 seconds, led a 1-2 finish for Britain at the world championships Wednesday, giving the British their first medals on the fifth day of the nine-day meet.
Nicola Sanders took silver in 49.65 barely outleaned at the tape. Noviene Williams of Jamaica took bronze in 49.66.
"At this time last year I was in complete turmoil," Ohuruogu said. "I didn't know what I was doing.
"I didn't know whether I was going to compete, continue training because I didn't see the point. I had so many things against me."
Prior to the championships, Ohuruogu had not raced since July 27, 2006, but has been in training for Osaka. She met the qualifying time of 51.50 seconds when she won the 400 Commonwealth Games title in March 2006 with a personal best of 50.28.
Ohuruogu responded to critics who said she did not belong on the British team.
"As far as I'm concerned, they can write what they like but I know what I do and I know the goals that I set myself," she said. "I'm pleased I can walk off the track with my head high because I know how hard I've worked for this despite what everyone else has said.
"The negativity has done nothing but spurred me on. It's nice to say to people: `Look, you got it wrong'."
Sanders also said the two of them had "proved them wrong" back in Britain, where little was expected.
"You can't ask for more than that," Sanders said. "Obviously I'd have liked if it had been the other way around. At the beginning of the season neither me nor Chirstine were running. My aim was just to make the final, and I thought that was a realistic aim. But to come second and Christine come first is fantastic."
Ohuruogu was suspended after missing three out-of-competition drugs tests, a violation which UK Athletics said was "due only to forgetfulness."
She has lodged an appeal against her lifetime ban from the Olympics, which the British Olympic Association automatically imposes on any athlete who commits a doping violation.