Accepting that track & field has long been corrupted by drugs, still can't understand why the knives are out for him so badly these last couple of days. What he's doing is within the rules, and he is not the first to come back after a drugs ban, nor the only UK athlete going to the World Indoor meet with previous form (shot putter Carl Myerscough being the other).

Is it that the powers that be don't believe him when he says he's now clean, or do they think he's rubbing their noses in it? Or is there an angle to the story that has yet to emerge?