Justin Gatlin clocked 9.88 seconds to outperform Asafa Powell in separate 100m races
The 23-year-old Jamaican destroyed his rivals in Zurich to equal the record of 9.77 seconds he shares with American Justin Gatlin.
The Jamaican clocked 9.77 seconds at the British Grand Prix meeting in Gateshead.
The Olympic and world champion said he still considers himself the fastest man in the world.
Justin Gatlin's world record in 100m has been amended to 9.77 seconds from 9.76 seconds due to an error in reading the result
He won the world 100 metres gold medal in the biggest winning margin in the history of the championships.
Three-time world champion Maurice Greene remained on course for an unprecedented fourth successive 100m title. Tim Montgomery also qualified for the semis easily.
The controversy over Tim Montgomery's dope charges when he set the record of 9.78 was made irrelevant by Powell's record-breaking run.
The Jamacian clocked 9.77 seconds at the Athens Super Grand Prix.
The World and Olympic champion broke the 100 metres world record with a time of 9.76 seconds at an IAAF Super Tour meeting on Friday.
Asafa Powell powered to his first major title with victory in the Commonwealth Games 100 metres final
Olympic discus thrower Allison Randall on Monday became the third athlete to confirm a positive drugs test from the Jamaican trials in June following Sunday's revelations by sprinters Asafa Powell and Sherone Simpson.
Five of the Jamaican sprinter's brothers have stepped on to the track as sprinters at some level.
The 30-year-old from Mozambique pulled away from the field on the final bend \n\nto win the 800 metres at the Golden League meeting.
Usain Bolt secured a sweep of the three men's sprint titles for a third successive Olympics when Jamaica successfully defended their 4x100 meters relay title in 37.27 seconds on Friday.
Jamaican Olympic sprint relay gold medallist Nesta Carter has returned an anti-doping violation for the banned stimulant Methylhexanamine after the re-testing of 454 samples from the 2008 Beijing Games, two sources familiar with the case have told Reuters. The Jamaican team of Carter, champion sprinter Usain Bolt and two other sprinters had won a gold medal in the relay at the 2008 Olympics. The sources, who spoke on condition of anonymity, said traces of Methylhexanamine were discovered in Carter's "A" sample, part of a batch of 454 from the 2008 Games that the International Olympic Committee (IOC) ordered to be re-tested. Carter could face sanctions only if his "B" sample also tests positive for the substance. Reuters has not seen the laboratory results. Neither Carter, who won gold in the 4x100 metres relay with Jamaican team mates Usain Bolt, Asafa Powell and Michael Frater in Beijing, nor his agent replied to repeated requests for comment.
Five Jamaican athletes, including two Olympic medallists, tested positive for banned performance-enhancing drugs at last month's national championships, sources close to Jamaican athletics said.
Jamaican sprinter Sherone Simpson, who tested positive for a banned substance last year, told a disciplinary panel on Tuesday that she saw no "red flags" before taking a supplement supplied by her trainer.
The under-fire Jamaica Anti-Doping Commission (JADCO) has appointed a new executive director just three days before the start of a World Anti-doping Agency (WADA) audit of its operations, the Jamaican government said on Friday.
Indian cricket team vice-captain Virat Kohli said doping in sport is simply not acceptable and called for the harshest possible punishment for those who bring disrepute to the game.
World Anti-Doping Agency (WADA) chief John Fahey has slammed Jamaican authorities for failing to accommodate an independent audit of their anti-doping regime until next year.
The Jamaica Anti-Doping Commission (JADCO) has hit back at allegations of poor administration and a lack of controls by a former official, insisting the authority's practices meet global standards.
Usain Bolt has told Reuters he would have no problem giving back one of his six Olympic gold medals if a Jamaican relay team mate is confirmed to have failed a drugs test.
Double Olympic champion Mo Farah won the 5,000 metres at the Diamond League meeting in Lausanne.
A summary of sports events and persons who made news on Thursday.
American champion Tyson Gay continued his impressive buildup to next month's World championships on Thursday by winning the 100 metres at Lausanne's Athletissima Diamond League meeting in 9.79 seconds.
Usain Bolt has enthralled hundreds of thousands in stadiums in Beijing, London and Rio as well as billions around the world.
Jamaica's Olympic sprint champion Usain Bolt has "no problem" with plans by the World Anti-Doping Agency (WADA) to test the hair follicles of athletes in a bid to clamp down on drug cheats in sport.
Olympic sprint champion Usain Bolt said on Saturday that controversy over Jamaica's anti-doping programme is scaring off potential sponsors and costing him money.
Usain Bolt fired his team of international 'All Stars' to victory in the inaugural Nitro Athletics Series in Melbourne on Saturday, capping the glitzy event with a dominant win in the 4x100m relay to pip hosts Australia in the final standings.
World record holder Usain Bolt withdrew from Jamaica's Olympic trials minutes before the men's 100 metres final on Friday.
Usain Bolt says he is not yet ready for a duel with Justin Gatlin.
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