Simone Biles on last Olympic chance after withdrawal from floor final

• Gymnast had already withdrawn from four other events
• American's participation in balance beam still doubtful
• Twisties: mental block which puts gymnasts at serious risk

Simone Biles has withdrawn from Monday's women's floor exercise final at the Tokyo Olympics, marking her fifth withdrawal out of the six finals she had qualified for.

After pulling out of the women's team final after losing her bearings in the air during her opening vault, Biles has now also pulled out of the individual all-around, vault, bars and floor finals due to a mental block on her elements and the need to preserve her mental health.