After having been a player for Audace San Michele, which later gave rise to Mariolino Corso, Fattori moved to Vicenza, making his Serie A debut as the club's starting defensive midfielder.
In 1946 he went to Sampdoria, which acquired him (along with Bassetto) for a record 10 million lira[3][4] after exhaustive bargaining with Inter.
With Inter, Fattori would stay for seven seasons winning two championships in 1953 and 1954.
At international level, Fattori earned four caps for the national team, including the win against Paraguay in the 1950 World Cup.
This biographical article related to association football in Italy, about a defender born in the 1920s, is a stub.