Simone Biles has won a bronze medal in balance beam, her first of the Tokyo Olympics.

The American gymnastics star finished behind gold medalist Guan Chenchen and silver medalist Tang Xijing both of China.

A week after taking herself out of several competitions to focus on her mental health, Biles drilled a slightly altered routine on Tuesday.

Biles, using a routine that ended with a double-pike dismount - no twisting required - posted a score of 14.000. That was good enough for second after four competitors during the eight-woman final.