Matias Antonini Lui (born 9 April 1998) is a Brazilian professional footballer who plays as a centre back for Serie B club Catanzaro.
Antonini started his career as part of the youth system of Grêmio before moving to Italy to join amateur club Meda.
[1] After a few appearances with friendly games for Inter, Antonini left the Nerazzurri for Cagliari, joining the Under-19 Primavera team;[2] he shortly thereafter made his professional first team debut in a 2016–17 Coppa Italia game against Sampdoria ended in a 0–3 away loss, on what turned to be his only senior appearance with the Sardinian club.
[7] He quickly affirmed himself as a staple for the Apulians, playing as a regular and being praised for his performances, which gained him a contract extension until 30 June 2025.
On 21 January 2024, Antonini joined Serie B side Catanzaro for an undisclosed fee, signing a contract until June 2027.