Quest Biles News Today

Beam will be tough especially when shes suffering from the twisties when a mental block hurts a gymnast during aerial moves. >> its such a difficult event in aerial space and you have to know where you are on everything because you only have a-- a little 4-inch strip to land on. >> reporter: tonight marks the final gymnastics routine and simone biles return to the competition floor. it will be the only time in these games she can win a medal in an individual event. in that quest biles joints sun...