Usain Bolt - Jamaican sprinter blasted his own world mark in the 100 today, running a smoking fast 9.58 at the IAAF World Track Championships. That was .11 seconds faster than his time from Beijing and right in line with what some physicists had predicted Bolt could run if he kept racing for the entire 100 meters. It’s a full two-tenths faster than Ben Johnson ran in his steroid-loaded “victory” at the 1988 Olympics.
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