In 1967-68, Mavety joined the Vancouver Canucks of the Western Hockey League (WHL), and he recorded 25 points (2G-23A), along with 148 PIM in 72 games, as the Canucks failed to make the playoffs.
With the World Hockey Association (WHA) beginning play in 1972-73, Mavety began the season with the Los Angeles Sharks, however he played only 2 games with the club, scoring a goal.