Andrea Pirlo
Marchionni was a member of the Italy U21 team between 2000 and 2002, and made 18 appearances for the side in total, scoring two goals. He was called up for the 2002 UEFA European Under-21 Football Championship under Claudio Gentile, forming the Italian midfield with Matteo Brighi, Andrea Pirlo and Manuele Blasi, as they reached the semi-finals.