American gymnast Jordan Chiles has not given up on the eventual return of the Paris Olympics individual bronze medal she was stripped of after the event.

Chiles said she had been devastated by last weekend's news that she had lost third place in the floor event after the Court of Arbitration for Sport (CAS) ruled in favour of an appeal by Ana Bărbosu, who was subsequently awarded the bronze.

"I have no words. This decision feels unjust and comes as a significant blow not just to me but to everyone who has championed my journey," Chiles wrote in an Instagram post.

"To add to the heartbreak, the unprompted racially driven attacks on social media are wrong and extremely hurtful.

"I've poured my heart and soul into this sport and I am so proud to represent my culture and my country."

Romanian Bărbosu and her team had appealed to CAS that an inquiry filed over the results of the floor event by the US team was registered four seconds after the one-minute deadline allowed by the International Gymnastics Federation.

The success of the appeal meant Chiles's score was reduced and she fell out of third place behind Brazilian winner Rebeca Andrade and silver medallist Simone Biles, her American teammate.

USA Gymnastics presented additional video evidence to CAS that it felt proved there had been no procedural error.

But the Lausanne-based CAS said in its published ruling the breach had been "crystal clear".

CAS also said that it had no power to order that a second bronze medal be given to Chiles, "as some of the parties have proposed".

Chiles, who also won team gold with Biles in Paris, said she would fight on and held out some hope that the authorities would ultimately relent.

"I am now confronted with one of the most challenging moments of my career," Chiles said.

"I will approach this challenge as I have others — and I will make every effort to ensure that justice is done. 

"I believe that at the end of this journey, the people in control will do the right thing."

Reuters