Honestly Im not sure that you could say for certain any top athelete, roadie, mtber, fottball, rugby etc is clean
governing bodies notoriously corrupt
the pressures immense at the top, age isnt kind and Im always amazed how quickly pro atheletes can come back from injury, eg cedric gracia and dan atherton both had massive injuries but were back of it within a couple of months, physio rehab top doctors etc but its still must be tempting
the minute you start on energy gels/ protein/recovery drinks/powders youre already on a grey area , I dont know whats in SIS does anyone else?
and what about supplements that arent banned but might be later etc
oh and fwiw i get the impression wiggos clean, except maybe the odd recreational toke 😉