09:50Sporting Witness'Fast Freddie' Spencer - Motorcycling's Child ProdigyBBC World Service Duration: 9 minutes Tue 5th Sep 2017, 09:50 on BBC World Service West and Central AfricaAvailable for over a yearListen nowThe American motorbike rider who won his first world championship aged 21. Show more GenresSportFormatsDocumentariesBrandSporting Witness Source: BBC Online