Yep, sprinting is the prime example. If an honest but genetically lucky and hard working sprinter came along today, there would be no way they could convince everyone that they were clean. Not getting caught doping is assumed to mean you are just too good at hiding it.

The dopers have basically ruined sprinting and a number of other sports for anyone who wanta to compete cleanly and does well.

It's entirely possible that Bolt is clean and is a Phelps like genetic outlier, but there will always be suspicions that can never be disproved, no matter what he does.

Or Bolt is an anomaly? We are talking about a third world country here. There isn't any money to have the best chemist etc. How bolt is different is that he is tall and has the same turn over as a small guy. Chemicals don't get you this, only genetics. It was the long held belief that tall people cannot run short distances. Now, every coach is looking for a tall runner with same turn over as a small guy. Bolt just changed the paradigm.

I am almost 100% sure that Bolt is taking something. It was the same with Lance Armstrong. Pretty much all the guys he was beating got caught one after the other. It didn’t seem possible that there was one athlete who is so much better than everybody else without doping. It’s already hard enough to win with doping.