It may seem silly, but I'm serious. I'm in the process of completing an entire Packers jersey and have located a nice pair of game worn home pants to go with the jersey. After close examination, there appears to be some brown skid markings in the seat. Just to be on the safe side, and after looking at hundreds of photos and cards, all I can see under the pants are what appears to be a jock (the long straps).

Do football players wear anything under their pants other than a jock?

Thanks.
Ralph