Rizzuto spent most of the 1970–71 season on the Canucks' roster as a utility player, recording 3 goals and 4 assists for 7 points in 37 games. He is probably most notable for being the first player born and trained in British Columbia to suit up with the Canucks or score for the team. He would fall out of the teams plans, however, and spend the entire 1971–72 season in the minors.
Garth was a tough competitor and was skilled enough to play junior hockey for the Kelowna Buckaroos and the Moose Jaw Canucks. Garth made his professional hockey debut with the Dallas Black Hawks of the Central Hockey League in 1967, playing three seasons. The team won the league championship in 1969 and Garth was the top scorer on the team.
Garth excelled at many sports and continues to make a contribution to the advancement of sports in officiating. He is a certified National Level 3 Coach in hockey, a certified National Level 3 Coach in boxing, a certified Level 1 Referee in boxing and a certified National Level 3 Racquetball Referee. Garth is currently a boxing instructor at the Cranbrook Boxing Club.