After a solid campaign with S.S. Lazio and a year with lowly Treviso F.B.C. 1993, Filippini signed with A.S. Livorno Calcio on a free transfer in 2006, being rejoined by Emanuele (also his teammate at Lazio and Treviso) the following year and helping the side return to the top flight in his third season, with 24 matches and one goal.