He officially debuted for Torino on 20 September 1942, in the Coppa Italia against Anconitana Bianchi. The match ended 7–0 for Torino, with two goals by Mazzola. On the 4 October, he made his league debut for Torino. Both Mazzola and Loik played poorly because of their imprecision and their lack of understanding, and were considered responsible for the 1–0 defeat Torino suffered in Milan against Ambrosiana-Inter. Mazzola initially objected to the position he was played in for over two months, despite the team beginning to put together a series of victories. He scored his first league goal for Torino on 18 October in a 5–2 win over Juventus.