Bernabo began his career playing for Rome-based Lazio and Primerva in the lower divisions of Italian rugby, but took a significant step forward in 2003 when he signed for Italian Super 10 outfit Calvisano. Captained the Italy Under-21 squad before making his senior debut in 2004 against the USA in Biella. The big second row prides himself on his physical approach to the game, and is a fine organiser around the pitch.