(Italian third and fourth highest divisions)[1] In mid-2002, he left for Serie C1 club Fermana[2] and scored 12 league goals.
In June 2004 Fermana bought back Mastronunzio and re-sold to Serie C1 side Frosinone along with Guido Di Deo.
In 2009–10 season, partnered with Roberto Colacone, he scored 22 goals in Serie B and originally survived from be relegated.
[7][8] The team recently relegated from Serie A and sold their striker Massimo Maccarone to Palermo for €4.5M.
[9] Mastronunzio made his club debut on 12 August 2010 in the second round of the Coppa Italia (Italian Cup) competition.
On 22 August 2011, Mastronunzio moved to Lega Pro club Spezia on loan with rights to full redemption at the end of the season.
The ban was further reduced to 3 years by the Tribunale Nazionale di Arbitrato per lo Sport of Italian National Olympic Committee (CONI).
He played the 4th and last match against Israel, replacing Carlo Cardascio at half time and partnered with Maccarone and Riccardo Ramazzotti to strengthen the attack.
However both team scored 1 goal in second half and ended in 1–1 draw and Israel advanced to the final tournament.