Which competition did Nero participate in the Olympic Games?

Nero bribed his way into several Olympic Games as he did in 67. He usually drove a single horse chariot, but Nero raced a ten-horse chariot, and nearly died being thrown from it. He 'won' on the pretense that he would have won if he had completed the race. Paid crowds paraded him with olive wreath crowns when he returned to Rome. He died one year later, and was removed from the list of winners. [Swaddling, Judith. 1999. The Ancient Olympic Games. Austin, TX: University of Texas Press.]