DERBY winners beget future Derby winners. Take Galileo, for example, who produced five Epsom Derby winners - New Approach (2008), Ruler Of The World (2013), Australia (2014), Anthony Van Dyck (2019) and Serpentine (2020), following his own 2001 victory.

How about recent Olympic medallists? Particularly in this millennium when performance stallions, artificial insemination and embryo transfer became the norm and improved the odds? How many Olympic medallists, particularly individual winners, produced another one?