Poll: Who is the greatest Olympian of all time?
'Fastest human in the world' Usain Bolt has retired, running his last individual race at the World Athletics Championships in London.
Is he the greatest Olympian of all time, with his eight gold medals? Does swimmer Michael Phelps blitz him with his 23? Or perhaps Sir Steve Redgrave wins for winning five golds in five Olympics? None of the above? Cast your vote now!