American gymnast Simone Biles has pulled out of the floor exercise, USA Gymnastics said on Saturday night.
"Simone has withdrawn from the event final for floor and will make a decision on beam later this week," the organization tweeted. "Either way, we’re all behind you, Simone."
The only competition she has not yet pulled out of is the balance beam.
She was the 2016 gold medalist in floor exercise, but her routine includes flips no one besides her has ever even attempted before in competition, a problem considering she's battling issues with determining her orientation in the air.
She pulled out of vault and uneven bars on Friday.