On 22 November he made his professional debut in Serie B for Bari as a substitute replacing Stefano Sabelli in the 84th minute of a 2–1 home win over Trapani.
[3] On 6 December, Filippini played his first match as a starter, a 1–0 home defeat against Carpi, he was replaced by Giuseppe De Luca in the 78th minute.
[6] Filippini ended his season-long loan to Pro Vercelli with a total of 14 appearances, including 11 as a starter, but in the second part of the season he played only 2 matches.
On 13 August he made his debut for Cesena in a 2–0 home win over Ternana in the third round of Coppa Italia, he played the entire match.
On 3 September he made his Serie C debut for Pisa in a 0–0 home draw against Robur Siena, he was replaced by Giulio Favale in the 84th minute.