EUGENE, Ore. -- Enjoying retired life, Allyson Felix was eating hot wings and sipping on a root beer float in Los Angeles when the phone rang.

She was needed back in Oregon for the prelims of the 4x400 women's relay. Could she return to world championships? She was on her way.

The most decorated sprinter in U.S. history jumped on a plane and was on the track Saturday night for the "last" time to help the Americans advance to the final.

And back into retirement she goes. She said she will watch the final of the women's 4x400 on Sunday from the seats.

That's the plan -- for now. She did have the fastest one-lap split of her teammates as the U.S. posted the fastest qualifying time of 3 minutes, 23.38 seconds.

"From what I know," the 36-year-old Felix said of whether this is really the end. "But you know, what do I know?"

Last Friday, she went through an emotional send-off after helping the 4x400 mixed relay team to a bronze medal. That was supposed to be it.

She went back to Los Angeles for the ESPY Awards and was a few hot wings in when she was summoned to the track for an encore performance.

Talitha Diggs ran the opening leg for the U.S. before handing off to Felix. She powered around the track and gave the baton to Kaylin Whitney, the sprinter who grew up idolizing Felix. Jaide Stepter Baynes brought it home.

"It's kind of coming full circle, literally," Whitney said of passing the baton to Felix. "To be able to run alongside her, as well as these other great ladies, is always a privilege. I can't be happier."

Soon after her run, Felix crouched down by the scoreboard and then sat on the grass to watch. When it was over, she hugged her teammates.

"I was well on my way (to retirement)," said Felix, who had her Saysh spikes -- a footwear company she launched -- dangling from her shoulder. "I had no plans to be back here for the rest of the meet. But things happen. I felt good. It was really cool to run when the stadium was full and just get all the love, and run with this amazing group of women. It's really set the team up to go after the title."

The American contingent in the final figures to be 400-meter hurdle world champion Sydney McLaughlin, fresh off her world-record performance Friday, and Dalilah Muhammad, who won bronze in the race. They were on the winning 4x400 team at the Tokyo Games. So were Felix and Athing Mu. But Mu has the final of the 800 on the same day.

Any chance Felix may leave the seats to run again?

"I was asked to run in the prelim," Felix said.

Should the group bring home a medal -- the team is a big favorite -- it would be Felix's 20th medal at world championships, extending a record she already held. She also has 11 Olympic medals.

"It was just about being a team player and putting them in position to run their best (Sunday)," Felix said.

Her immediate plans revolve around one thing -- more hot wings.

"I only got a few of them," Felix said. "I'll finish them now."