Reigning women’s Olympic 800m champion Athing Mu will not defend her title at the 2024 Paris Games after falling in the US Olympic trials.

The 22-year-old tripped as she ran in the middle of the pack about 200m into the race in Eugene, Oregon and finished last.

Nia Akins won the race and will travel to Paris along with runner-up Allie Wilson and third-placed Juliette Whittaker.

Mu would have been expected to be a key adversary for Team GB’s Keely Hodgkinson, who claimed silver behind the American in the 800m in Tokyo as a teenager.

In the men’s 400m, Quincy Hall chased down 2022 world champion Michael Norman after the final turn to win in 44.14 seconds.

“I know I can run a lot faster than I did,” Norman said.

“It was just a poorly executed race, I got a little too excited during the moment so I paid for it at the end.”

Chris Bailey was third and will compete in Paris while 16-year-old Quincy Wilson finished sixth to put him in the mix for a call-up to the relay pool.