Tokyo 2020 Olympics - 'Watch out!' - Nightmare crash as BMX rider Niek Kimmann hits hapless Tokyo of

Tokyo 2020 Olympics - 'Watch out!' - Nightmare crash in Olympic Games training as Dutch BMX rider Niek Kimmann hits a hapless Tokyo official who had strayed on to the circuit. Watch every unmissable moment live from Tokyo 2020 across Eurosport, the Eurosport app and discovery+. Download the Eurosport app for iOS and Android now.