Rivabella competed in the military rifle event. His time and place in the competition are unknown, but he was not among the top 13 of the 42 shooters that competed.
In any case, this athlete still remains very enigmatic because we know only the surname and the competition and nothing else. Other sources don't confirm the participation of a "Rivabella" in Italy in other competitions except some fencing matches. Notwithstanding that fact, one should consider that many of participants were amateurs and, as such, would cause this search of other competitions external to the First Olympics to have no results.