EUGENE, Ore. — Allyson Felix had the star power to change the Olympic schedule.

Now, it’s her schedule that needs adjusting.

Felix’s run at the 200-400 Olympic double, made possible after Olympics officials honored her request for a chance to run both races, came to an earlier-than-expected end Sunday. She finished fourth in the 200-meter final, .01 behind a sprawling Jenna Prandini for third place at the U.S. track and field trials.

“Honestly, disappointed,” said Felix, who will not get a chance to defend her Olympic title in her signature event. “The whole year, that has been what I was working for. When I look back and see everything that happened, I still think it’s quite amazing I was able to make the team.”

She did make the 400-meter lineup, despite a right ankle injury so severe that she avoided running around the track in the correct, counterclockwise direction until just before trials, for fear she’d put too much outside pressure on her injured ankle.

Felix started slow in the 200 final, never made up ground against winner Tori Bowie or second-place Deajah Stevens and could not hold off Prandini, the former University of Oregon star who had to wait about 30 seconds to see the result for third place go up on the board. Afterward, she was scraped-up but smiling.

“I don’t know what happened,” Prandini said. “But it got the job done.”

One of Felix’s biggest fans made news earlier in the day: 16-year-old Sydney McLaughlin became the youngest member of the U.S. Olympic track team since 1972 when she finished third in the 400-meter hurdles.

In other events on the final day of the trials:

 Matthew Centrowitz made his second Olympic team with a victory in the 1,500. Runner-up Robby Andrews and third-place finisher Ben Blankenship also are headed to Rio, but Leonel Manzano, the silver medalist in 2012 in London, finished fourth and did not make the team.

 Beijing Olympics silver medalist Kerron Clement won the 400 hurdles, ahead of Byron Robinson and Michael Tinsley.

Jenny Simpson and Shannon Rowbury made their third Olympic team in the women’s 1,500 and will be joined by Brenda Martinez.

 Jenn Suhr will get to defend her Olympic gold medal in the pole vault after winning the event again.

GYMNASTICS: Simone Biles can officially book that plane ticket for Brazil. Same for defending Olympic champion Gabby Douglas.

Biles, the three-time world champion, secured her spot on the U.S. Olympic team with a near flawless tour of the SAP Center in San Jose, California, earning an automatic berth on the five-woman team by strolling to the all-around title at the Olympic trials.

Biles will be joined by Douglas, three-time Olympic medalist Aly Raisman, Madison Kocian and Laurie Hernandez. MyKayla Skinner, Ragan Smith and Ashton Locklear are the alternates. Biles will head to Rio as the heavy favorite to become the fourth straight American to win the all-around title.