Career
Gassoff spent most of his career in the CHL with the Tulsa Oilers and the Dallas Black Hawks. He was drafted by the Vancouver Canucks in round #2, 28th overall in the 1975 National Hockey League Amateur Draft, and was selected by the Winnipeg Jets in round 1, #8 overall 1975 WHA Amateur Draft. He weighs 195 lbs, is 5"11, shoots left, and plays left wing.
He first played in the WCHL, then moved up to the National Hockey League/CHL level
The only team he did play for in the National Hockey League is for the Vancouver Canucks. He later on retired as a Dallas Black Hawks player.