Doping and athletics

Sir, – So many athletes in the word athletics championships in Beijing are mentioned as having previously been banned for taking drugs that I think a separate competition should be held for the transgressors. Why are they there? I am blue in the face trying to differentiate between the clean and the mucky in the course of a race. To my horror, I caught myself cheering on a cheat the other day before I realised my mistake. – Yours, etc,

ROBERT SULLIVAN,

Bantry,

Co Cork.