|Date of birth||14 January 1989|
|Place of birth||Rimini, Italy|
|Height||1.83 m (6 ft 0 in)|
|2010||→ Südtirol (loan)||15||(3)|
* Senior club appearances and goals counted for the domestic league only and correct as of the end of 2010–11 season.
Born in Rimini, Emilia–Romagna, Marchi started his career at hometown club Rimini Calcio F.C.. In January 2010 he left for Seconda Divisione club Südtirol, winning the champion of the group A. Rimini expelled from professional league in 2010, and Marchi joined Chievo on free transfer. However he re-joined South Tyrol in co-ownership deal for a peppercorn fee of €500 and South Tyrol bought back Marchi for €500 after he scored 9 goals as team top-scorer.
On 14 July 2011 he was signed by Serie A team Novara but re-sold to Pavia on 16 July in another co-ownership deal. He was the joint-topscorer along with Filippo Falco. Marchi also scored once in relegation "play-out" (another goal by Alessandro Cesca), made the club survived from relegation. In June 2012 he returned to Novara and re-sold to Entella on 1 August 2012.
- "L´FC Südtirol domenica in trasferta contro la Pro Vercelli: Mattia Marchi nuovo attaccante dei biancorossi". FC Südtirol (in Italian). 8 January 2010. Retrieved 29 November 2010.
- AC Chievo-Verona s.r.l. Report and Accounts on 30 June 2011 (Italian)
- "Classifica Marcatori - 1° Divisione gir. A". Lega Pro (in Italian). ca. End of 2010–11 season. Archived from the original on 3 July 2011. Retrieved 3 July 2011. Check date values in: