What are you talking about? Name one runner that was in the Monaco 800m, the 400 Amos did and then the London race??
Listen I don't even care for your argument about why racing hard doesn't injure you because it flies in the face of science and commonly known facts about human performance in general (you are more likely to get injured if you push yourself in sport it's so f*cking obvious), but I would LOVE to hear the argument as to why pulling up injured indicates doping.
Write one coherent argument that links injury in a race to doping. I dare you.