Spencer was drafted 55th overall by the Toronto Maple Leafs in the 1969 NHL Amateur Draft. On December 12, 1970, He was called up to play for the Leafs in what would be his first NHL game on television. Spencer phoned his father Roy in British Columbia to tell him to watch the game that night on Hockey Night in Canada. There was an interview with Spencer between periods of the game. However, in British Columbia, instead of the Toronto Maple Leafs/Chicago Black Hawks game being shown, CBC Television aired a game featuring the Vancouver Canucks versus the California Golden Seals instead. Roy was infuriated by this and drove 135 kilometres (84 mi) to Prince George, where the closest CBC Television station, CKPG-TV, is located. When he arrived there, he ordered station staff, at gunpoint, to broadcast the Maple Leafs/Black Hawks game instead. The station did put the game on, but as Roy left the station, he was confronted by the RCMP. After he had a short stand-off with the RCMP, Roy Spencer was shot and killed. He played 95 regular season games with the Maple Leafs and also spent time with their developmental team, the Tulsa Oilers.