The Tiger-Cats recently made a Facebook post with a photo of a Bombers-Cats Grey Cup from the late 50s or early 60s. Featured in this photo are hashmarks placed perhaps 15 yards from the sideline. I seem to recall the hashmarks being this far out when having watched footage from the 1972 Grey Cup in Hamilton.
As long as I’ve been watching Canadian football the hashmarks have been set 24 yards inwards from each sideline as they are today. I believe they are the same distance as the hashmarks are from the sidelines in the NFL hence the narrower hashmarks on that narrower field. It also means the boundary side of play in Canadian football features essentially the same geometry and space available as that found in the NFL.
Does anyone know when the hashmarks were narrowed in the CFL and why?
What impact did this narrowing have on the game and how its played?
Is there any benefit to perhaps widening the hashmarks again?