Simone Biles wins record 24th medal at world championships with beam gold

• 22-year-old eclipses Vitaly Scherbo's tally of 23 medals• Biles beats China's Liu Tingting in beam balance final Simone Biles clinched a record 24th medal at the world gymnastics championships on Sunday, becoming the most decorated athlete in the event's history. Related: Unstoppable Simone Biles wins vault to tie world championships medal record