Ballerini was born in Florence. In 2001, he won the European 125cc road racing championship. His best year in the world championships was in 2002 when he finished in 18th place in the 125cc world championship. In 2003 Ballerini won the 125cc Australian Grand Prix.
Races by year
(key) (Races in bold indicate pole position)
|2003||125cc||Gilera / Honda||JPN
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