Yep. He was very close to taking Evander apart in there. And Don Turner sure saw it between rounds. And Evander being Evander, fired him after the fight. That is another tell tale sign with recent fighters as well; lose a fight and change trainers. Not the promoters or managers though, just trainers.
Honestly not sure if they ever were 100% clean but they definitely had more hunger n better reflexes back then for sure.