Ron Clarke was a young athlete still finding his feet as one of the world’s greatest runners when he fell in a tangle of legs at the Australian championship at Melbourne’s Olympic Park. John Landy, who was expected to break his own world record, jumped over the fallen Clarke, his spikes driving into the 19-year-old’s Clarke’s shoulder. Landy stopped and turned back to see if Clarke was all right. Clarke told him to run on. The rest of the field was 40 metres ahead, but Landy caught them and won the race.