The American says that whilst Bolt's untidy technique, where he rocks from side to side, can let him down, he stands a better chance than fellow Jamaican Blake of running 18-point.
Usain Bolt has run the 100 meters in 9.58 seconds and the 200 meters in 19.19 seconds.
Bolt believes the world record in the 100 meters could be lowered to 9.4 seconds.
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