Belak made his Toronto Maple Leafs debut on February 17, 2001, getting no points in a 5–5 tie against the Colorado Avalanche. He scored his first goal and point as a Maple Leaf on February 25, 2001, scoring against Jocelyn Thibault in a 6–4 loss to the Chicago Blackhawks. It was Belak's first goal since October 22, 1997, when he was a member of the Avalanche. He finished the season appearing in 16 games with Toronto, scoring a goal and an assist, as well as 31 PIM.