Jamaica's Usain Bolt followed last week's record-breaking exploits at the World Championships with another blisteringly fast 100m in Zurich.
The world and Olympic champion, who set a world record of 9.58 seconds in Berlin, came from behind to beat compatriot Asafa Powell in a time of 9.81 seconds.
Powell finished in 9.88 seconds followed by American Darvis Patton (9.95 seconds).
Powell, the bronze medallist in Berlin, said: "I have 9.6 in my legs and at my next meet i'm going to put it on the track. Everyone has to go out with that in mind, that they can beat Usain.
He's way ahead of the crowd right now but we're really playing catch-up. We'll get there somehow. Usain is taking the sport to a whole different level and we are going up there to join him."
