At least one from Bolt, Gay or former world record-holder Asafa Powell will be scheduled to run at every Diamond League meeting.

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In London, Bolt will be running against compatriot and former world record-holder Asafa Powell in the 100m, and with him in the relay.

CNN: Bolt aims for improvement in London event

Dr. Lester Friedlander, DVM and former Chief USDA Inspector, told Congress in 2008 that the captive bolt used to slaughter horses is ineffective.

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Bolt and Blake are the two fastest men of all time over 200m, with the former's time of 19.19 secs the current world record.

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