[2][3][4] A right-footed player, his main attributes are his pace, technique, and dribbling skills, as well as his crossing and playmaking ability, which make him an effective assist provider.

He spent three seasons at the club only to leave the team for Parma in 2001, where he won the 2001–02 Coppa Italia, though he only played in the first leg of the final.

That season Marchionni became a revelation in the league and made his career breakthrough, with 35 games played and six goals scored in Serie A and UEFA Cup.

The 2005–06 season was by far Marchionni's best with Parma: he gave great contributions to the team's gameplay, including many assists and many instances of "playmaking."

He stated that he hoped to continue his form and remain injury free for the season's Champions League, Serie A, and Coppa Italia with Juventus.

[6][7] In the 2008–09 Serie A campaign, he was quickly introduced into the Juventus squad as the club's first-choice winger Mauro Camoranesi was ruled out to injury problems.

[6][11] On 15 July 2009, Marchionni signed a contract with ACF Fiorentina after having spent three years with Juventus, making a total of 78 appearances and seven goals in all competitions.

[19] 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.

[20] Marchionni made his senior debut for the national team on 12 November 2003, under Giovanni Trapattoni, in a 3–1 friendly defeat to Poland in Warsaw.