4x100m record win for Jamaica

Usain Bolt gave London 2012's athletics action a spectacular send-off as Jamaica won the men's 4x100m relay in a world record time.
The sprint superstar made it a hat-trick of Olympic titles for the second successive Games as he led his team-mates home in a time of 36.85 seconds.
Nesta Carter, Michael Frater and then double silver medallist Yohan Blake gave Bolt the lead he scarcely needed to hold off the United States in second and Trinidad & Tobago third.