So was reading the Uniwatch's article on the history of the CFL's east division's helmets and came across this:
From a 1982 pre season game, Ottawa Rough Riders vs Montreal Concords.
Now the complete black helmet is not unusual for Ottawa to do in the pre season but it's the red jersey the Rough Riders are wearing. It's an oddity cause it's not at all documented save for this photo. This is all I managed to find in regards to this uniform. It's neat but any other one shot wonders in the sports world that are complete unknowns?
Edit: Found another photo but it's black and white, Looks like it's from a different year.