Are today’s sporting competitions fair? The four-time Olympic champion sprinter tells Anne McElvoy why he handed back his gold medal after discovering his team-mate's use of performance-enhancing drugs, and why he thinks doping will never be eradicated. Should athletes be allowed to protest on the podium? And, the man with the “golden shoes” on his fantasy sport opponent? With acknowledgments to Team USA. Please subscribe to The Economist for full access to print, digital and audio editions: www.economist.com/podcastoffer   See acast.com/privacy for privacy and opt-out information.