Olympic Athletics: 100m final leaves Jackson tongue-tied

BBC commentators Colin Jackson, and Denise Lewis can hardly contain their excitement as Jamaica's Usain Bolt retains his 100m title in an Olympic record time of 9.63 seconds.

Bolt's compatriot Yohan Blake took silver with Justin Gatlin of the United States the Bronze.

Watch the Sunday's athletics on BBC Sport's Interactive Video Player.

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