This is a naive view of doping, sport, and physiology. Of course, they use doping nowadays, just as they did yesterday. I would go so far as to say that all top professional athletes in individual sports use banned substances. They use methods and substances that allow them to avoid testing positive. At the highest levels, all athletes are genetically gifted. However, the performance differences created by substance-induced physiological alterations are too great to be compensated for by slight differences in genetics, training, and nutrition.

Almost all records in individual sports have been broken since competitions were basically not subject to doping controls. Athletes from the DDR and the Soviet Union, and more recently from China, have used enormous amounts of hormones. Yet almost all records set in the 1980s have been broken. Is there better talent selection today? Certainly, along with better training, science, and nutrition, as well as better surfaces and shoes/equipment. But physiology reigns supreme.