his coach - under whom he went from an also ran no one heard of to the 'greatest' middle distance runner of all time - has just been banned for 4 years for encouraging doping. Apparently one of his assistants spilled the beans to USADA.

Afraid that the cold, hard facts are that any exceptional performance in athletics nowadays is almost certainly because they are doped out of their minds. See also Michael Johnson and Usain Bolt. To believe otherwise is to be at best naive, at worst utterly clueless about the state of that 'sport'.