He was the Leafs' leading scorer in the 1963–64, 1966–67 and 1969–70 seasons, and the team's top goal scorer in 1970–71 and 1972–73. Keon was considered one of the fastest skaters in the NHL, and one of the best defensive forwards of his era. He would usually play against the opposing team's top centre, and developed a reputation for neutralizing some of the league's top scorers. In 1970–71, he scored eight shorthanded goals, setting an NHL record for most shorthanded goals scored in a single season, which would later be broken by Marcel Dionne in 1974–75, with 10 shorthanded goals (Dionne's record would be broken by Wayne Gretzky in 1983–84 with 12 shorthanded goals. In turn, Gretzky's record would be broken by Mario Lemieux in 1988–89, when Lemieux scored 13 shorthanded goals in a season).