DALLAS (AP):

Allyson Felix has added a twist to the double talk. After months of indicating she might add the 400m to her signature 200-metre race at the London Olympics, Felix raised the possibility of a different double yesterday, saying she's also considering running the 100 metres.

Coming two days after running a personal-best 10.92 to win the 100 at the season-opening Diamond League meet in Doha, Qatar, this was no small bit of news from one of the world's best sprinters.

"It's definitely one of my possibilities," Felix said at the United States (US) Olympic Committee media summit. "Since my last race, people actually believe me. I'll run the 200 for sure and then I'll see ... whether I'll run the 100 or the 400."

The decision will be made closer to the Olympic trials, set to start June 22 in Eugene, Oregon. As always, Felix said her coach, Bobby Kersee, will have final say.

"I'm just going to start saying, "Ask Bobby"," Felix said.

Felix has been intrigued by the challenge of doing both the 200m and 400m, a rare combination for sprinters, and she ran both events at last year's World Championships as a test ahead of London.

She won the silver medal in the 400m, but the longer distance left her fatigued and likely cost her a fourth straight title in the 200m. She didn't have her customary surge at the end of the race and wound up third, a stunning finish in the distance she's dominated for much of the last decade.

Last chance

Felix is desperate to win an Olympic gold in the 200 after coming up short twice and she doesn't want anything to jeopardise what could be her last chance in London.

"It motivates me every day," she said. "I'd totally be lying if I said I could walk away and be happy (without a gold medal). No, I think I could walk away and be OK with it because I'm able to put things in perspective and know that that's not the end of the world. From a competitive nature, that's what I want."