Usain Bolt returns to the site of his first global triumph this week for a world championships showdown with a convicted dope cheat that has ramifications for athletics beyond just establishing who is the fastest man in the world.
Analysis of the track events in the men's athletics programme.
Usain Bolt delivered. Mo Farah, Elaine Thompson, David Rudisha, three world records and a dominant United States played their part too, as athletics enjoyed being back in the limelight.
Jamaican sprinter Usain Bolt false-started and failed to finish in the 100m at the World Championships on Sunday and subsequently was disqualified for leaving the blocks far too early. Here are other athletes who faced disqualification after false starts.
Olympic 100m and 200m champion Usain Bolt does not mind sharing the limelight with his Jamaican rival Yohan Blake but thinks competing against him all the time would be boring.
Usain Bolt was made to look human by a combination of a Russian rainstorm and a fired-up Justin Gatlin on Sunday but the Jamaican superstar was still good enough to regain his world 100m title in a surging 9.77 seconds.
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.
Asafa Powell equalled the second fastest time ever over 100 metres when he clocked 9.72 seconds at the Lausanne grand prix.
World 100 metres champion Yohan Blake ran a personal best of 9.82 seconds at the Zurich Diamond League meet on Thursday in his first race since winning gold in Daegu.
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.
'I've just done everything I wanted to do in the sport'
'The awareness that we're bringing in more elite cricket to the USA is something that's been a strategic priority for us.'
Tyson Gay sent a message to missing rivals Usain Bolt and Asafa Powell with victory in the 100 metres at the London Diamond League meeting on Friday in a world leading time of 9.78 seconds.
A summary of sports events and sports persons, who made news on Thursday.
Usain Bolt returned to the scene of his triple Olympic glory and duly delivered for 60,000 camera-flashing fans as he overcame a slow start to win the 100 metres and give the London Anniversary Games the Friday finale it demanded.
Former world record holder Asafa Powell clocked the fastest time of the year when winning the 100 metres in 9.83 seconds at the Ostrava Golden Spike meeting on Thursday.
World championship favourite Noah Lyles stormed to the year's second fastest 200 metres, 19.65 seconds, as he returned to competition at the Paris Diamond League meeting on Saturday. Reigning World champion Ramil Guliyev of Turkey was more than three-tenths of a second adrift in 20.01 and Canadian Aaron Brown finished third in 20.13.
Jamaica's former world champion Yohan Blake sailed into the final of the 100 metres at the Commonwealth Games on Sunday, living up to his top billing on the opening day of the athletics at the Gold Coast.
The US Federal Reserve chairman Ben S Bernanke has been named as the 'Person of the Year 2009' by the leading American magazine Time.
Out of the two world records held by track superstar Usain Bolt, his 100m dash timing of 9.58 seconds stands more likely to be broken than the 200m mark of 19.19secs, his fellow Jamaican sprinter Asafa Powell said on Friday.
Usain Bolt, already enshrined as one of the greatest Olympians of all time, became the most successful athlete in world championship history. Shelly-Ann Fraser-Pryce also completed the hat-trick.
Asafa Powell thinks he has pinpointed why he has so often failed to produce on the big occasion and believes that if he is at his best he will win the 100 metres at the London Olympics.
The world's greatest athletes descend on London in July for the 2012 Olympics. Martyn Herman highlights 10 to watch when the Games get underway.
A relay gold medallist at the 2014 Commonwealths in Glasgow, the Jamaican said he was busier than ever after last year's retirement and focused, in the sporting arena at least, entirely on his nascent career as a footballer.
Athletics powerhouse Jamaica named an understrength 46-member squad sans some of the biggest stars in the world, including top sprinters, for next month's Commonwealth Games in India.
Defending 100m champion Asafa Powell is all set to join fellow Jamaican sprinter Usain Bolt in pulling out of the Delhi Commonwealth Games, the build-up to which has been marred by withdrawals by star athletes and corruption allegations.
After men's Olympic Champion Usain Bolt, women's Olympic gold medallist Shelly-Ann Fraser has also decided to opt out of this year's Commonwealth Games.
For the world's fastest man, Usain Bolt sure took his time in responding to the controversial disqualification which stripped athletics of its biggest name from its blue riband event.
India's badminton sensation Saina Nehwal was Thursday declared the Sports Illustrated Sportsperson of the Year for her stupendous show in 2009.
World 100 metres champion Yohan Blake will not defend his title at next month's World Athletics Championships in Moscow due to a nagging hamstring injury, his manager said on Tuesday.
Usain Bolt stretched, stifled a yawn and, almost apologetically, extracted his giant frame from his blocks before strolling through his heat as he began his bid for a third successive world 200 metres title on Friday.
Former world record holder Asafa Powell won his third consecutive 100 metres race of the season at the Monaco Grand Prix on Monday in his last major meeting before the Beijing Olympics starting next week. The Jamaican Commonwealth champion clocked 9.82 seconds, his best time this year. Only compatriot Usain Bolt, who took the world record from Powell on May 31, and American world champion Tyson Gay have run faster in 2008.
Former 100 metres world record holder Asafa Powell believes his rivalry with the current number one Usain Bolt could mirror that of some of the great boxers -- if he can be bothered to build up the hype.
The American was due to face world record holder Usain Bolt and fellow Jamaican Asafa Powell in front of a capacity 50,000 crowd.
'The marathon is run at a certain pace. It's not easy.'
American sprinter Tyson Gay notched the world's best 100m record of 2011 with a 9.79sec run at an event in Clermont, Florida.
The Americans last won gold in the men's 200m in the 2004 Olympics, when Shawn Crawford led home a US clean sweep, and they look capable of repeating that.
Neeraj dropped the news to the world at a time of his choosing, which was a good 48 hours after solemnising his union with US-based tennis player and coach Himani Mor.
Justin Gatlin's win in the 100 metres at the World Athletics Championships was "not the perfect script", IAAF president Sebastian Coe said on Sunday.
Jamaica's Elaine Thompson surprised even herself by storming to victory in the Olympic women's 100 meters on Saturday as compatriot Shelly-Ann Fraser-Pryce failed in her bid to win a third straight title.