In addition to basketball, Moretti grew up in Bologna, Italy playing soccer, tennis, and volleyball.

[1] On June 12, 2017, he signed an Athletic Scholarship Agreement to play for Texas Tech in the NCAA Division I.

[10] By the end of the regular season, he was shooting 92.2 percent on free throws, which ranked second in the NCAA Division I. Moretti won the Elite 90 Award for academic excellence[a] and earned third-team All-Big 12 recognition.

[14] On May 23, 2020, he decided to forego his senior season at Texas Tech to pursue a professional career in Europe, signing with agent Miško Raznatović of BeoBasket.

[15] On May 26, 2020, Moretti signed a multi-year contract with Olimpia Milano of the Lega Basket Serie A and the EuroLeague.

He averaged 10.4 points per game at the 2014 FIBA Under-17 World Championship in Dubai, leading the Italian national under-17 team to ninth place.

[5] Moretti guided the Italian under-19 team to a bronze medal at the 2016 FIBA Europe Under-18 Championship in Samsun, after averaging 14.8 points and five assists per game.