During his prime, Anzolin was regarded as one of the best goalkeepers in Italy, due to his consistency and shot-stopping ability. He was an effective, reactive, and agile goalkeeper, with a good positional sense, who was very quick to come off his line and collect low balls in the area, although at times he was caught out on crosses as he was neither particularly tall nor physically imposing. Because of his name, agility, and his relatively small stature and slender build for a goalkeeper – standing at –, he was given the nickname "the mosquito" (la zanzara, in Italian).
