Nicholas Pierini

Sassuolo

On 29 October 2017, Pierini made his professional debut in Serie A for Sassuolo as a substitute replacing Luca Mazzitelli in the 71st minute of a 3–1 away defeat against Napoli. On 20 December he played his first match as a starter in Coppa Italia, a 2–1 away defeat against Atalanta in the round of 16, he was replaced by Diego Falcinelli in the 54th minute.

Loan to Spezia

On 10 July 2018, Pierini was signed by Serie B side Spezia on a season-long loan deal. On 4 August he made his debut for Spezia and he scored his first professional goal in the 66th minute of a 2–1 home win over Sambenedettese in the second round of Coppa Italia, he was replaced by Luca Vignali after 85 minutes. Three weeks later, on 25 August, he made his Serie B debut for Spezia as a substitute replacing Emmanuel Gyasi in the 64th minute of a 1–0 away defeat against Venezia. One week later, on 1 September, Pierini scored twice in a 3–2 home win over Brescia. On 27 October he played his first entire match for the team, a 0–0 away draw against Padova. Pierini ended his season-long loan with 27 appearances and 6 goals.

Loan to Cosenza

On 9 August 2019, Pierini was loaned to Serie B side Cosenza on season-long loan deal. On 11 August he made his debut for the club in a 1–0 away defeat against Monopoli in the second round of Coppa Italia, he played the entire match. On 24 August he made his league debut for Cosenza in a 0–0 away draw against Crotone, he was replaced…

Club

As of match played 26 December 2024

He is a son of former Italy international footballer and current coach Alessandro Pierini.

Sassuolo

Serie B: 2024–25