Why does Jordan Chiles have to return her Olympic gymnastics medal?

The American sports writer Beau Dure explains how an incorrect ruling made in haste has resulted in the US gymnast Jordan Chiles being asked to return her Olympic bronze medal, despite potential evidence that she is indeed deserving of it. During the Paris Games, Chiles was not awarded points that she should have been for one of her routines. USA Gymnastics put in an inquiry which was accepted, however the court of arbitration for sport (CAS) concluded that they were four seconds too slow in doing so. USA Gymnastics however has now submitted new evidence proving otherwise but the CAS refuses to accept an appeal of its decision

• Jordan Chiles must return bronze medal after USA Gymnastics appeal fails