If they are on something then their test would have comeback positive dont you think? The Marquez picture with the acne could be prove that hes on something but that something would have to be legal since hes not failing any test. Kinda how Floyd uses those injections that are only legal in Vegas, if he fought somewhere else he'd fail the test for PED

Floyd Mayweather Jr. uses illegal injections

I mean its possible that their on something that hasnt been found to be illegal in combat sports. So if Marquez and Manny are on something that isnt illegal yet would they still be considered cheats?