[3] As a junior, Galimberti reached the final of the 1994 French Open, losing to Jacobo Díaz.

En route, he defeated future top pros Stefan Koubek, Gustavo Kuerten, Mariano Zabaleta and Nicolás Lapentti.

On the pro tour, Galimberti played singles mostly at Challenger level, while in doubles he won the 2005 ATP title in Milan, teaming up with Daniele Bracciali, and reached two other ATP finals.

On February 18, 2008, Galimberti was suspended for 100 days and fined $35,000 (£17,808) after being found guilty of betting on tennis games between June 2003 and January 2006.

Investigations into Galimberti's activities took place in August 2007, and were reviewed by an "independent anti-corruption hearing officer".