Born in Sassari, Sardinia, Trini started his career at Piedmont team Juventus.
[2] That season Juventus was the champion of wild card group (Berretti team of Serie A, B & D clubs).
Trini also became the starting keeper[4] of Primavera under-20 team, ahead Giorgio Merlano and Andrea Pozzato.
[6][7] Trini then left for Juve Stabia in co-ownership deal, along with Stefano Di Berardino and Giuseppe Rizza.
He also played in the relegation "play-out", made the club remained in Seconda Divisione after winning Valenzana in 4–2.