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Overview of the events of 1931 in Canadian football
The Canadian Rugby Union approved the forward pass for all leagues and the first touchdown pass in Grey Cup history was a Warren Stevens to Kenny Grant play in Montreal's 22–0 win over Regina.
Convert scrimmage line was moved to the five-yard line, and the point could be scored by a drop-kick, place kick, run or pass.
2009 Canadian Football League Facts, Figures & Records, Canadian Football League Properties/Publications, Toronto, Ontario, ISBN978-0-9739425-4-5, p.282-283
2009 Canadian Football League Facts, Figures & Records, Canadian Football League Properties/Publications, Toronto, Ontario, ISBN978-0-9739425-4-5, p.293