Usain Bolt insisted he had no regrets after Justin Gatlin gatecrashed his farewell in the 100 metres final at the World Championships.

Muhammad Ali stood alone on many fronts, but Joe Frazier, George Foreman and a few others still stood toe-to-toe with him in the ring. Jack Nicklaus contended with Arnold Palmer on the front end of his career and Tom Watson on the back end.

Usain Bolt hopes he has achieved a feat no man will be able to match as he completed his 'triple triple' mission by anchoring Jamaica to gold in the men's 4x100 metres relay on his final Olympic appearance.

Usain Bolt's belief that he could threaten his 200 metres world record at the Rio Olympics did not look misplaced as he sauntered into the semi-finals.

A wagging finger. A stunning swim. And with that, a win for clean athletes everywhere in an Olympics where no one is sure the playing field is really level.

King had already "stirred it up", in her own words, in the build-up to the race by wagging her finger at the "cheating" Russian.

America’s hot summer of racial tension, violence and politics has spilled on to the basketball court, the track and the Twitter feeds of some of the country’s top sports stars.

Over the weekend Jimmy Barry-Murphy made the headlines, stepping down as Cork senior hurling manager. It was his second time in the limelight in less than a week, as he was made a member of the GAA Hall of Fame a few days ago.

Usain Bolt stormed to the World Championship sprint double at the World Athletics Championships when a runaway segway proved more problematic than Justin Gatlin. Four days on from riding to the rescue of his beleaguered sport in the 100 metres, the Jamaican attempted to make it four successive half-lap world crowns in Beijing.

Usain Bolt again delivered when it mattered as he scorched to the fastest time of 2015 to win a record fourth straight world 200m title in 19.55 seconds and sweep the individual sprints at a global championships for a fifth time. 

Usain Bolt and Justin Gatlin will renew their battle for World Championship gold this afternoon after the pair cruised into today’s 200 metres final (1.55pm Irish time, live on BBC2).

Usain Bolt rode to the rescue of his beleaguered sport in the toughest race of his career as he dashed Justin Gatlin’s hopes of 100m gold at the World Championships in Beijing.

We all love to see great rivalry in sport, a battle between the victor and the vanquished, the goodies and the baddies.

Thomas Barr produced a time just six-hundredths of a second outside his Irish record, but still bowed out of the men’s 400m hurdles at the semi-final stage at the World Athletics Championships in Beijing.

The race of the championships

Back at the scene of his 2008 Olympic triumphs, Usain Bolt will square off against controversial American Justin Gatlin in the 100m at the world championships.

Coe v Ovett. Unless you were hung up on some British class divide thing, or had a bit of a Brideshead Revisited phobia, you had to be a Coe man, didn’t you?

Usain Bolt blew away any fears about his fitness and fired a major warning to Justin Gatlin as he blasted to his fastest 100 metres of the year on his return to London’s Olympic Stadium last night.

The stage is set for a top class evening of athletics at the Morton Games in Morton Stadium, Santry this evening headlined by the second fastest man in history, Yohan Blake, and World Universities 400m hurdles champion Thomas Barr.

Usain Bolt is back in old London town and that is usually good reason to be cheerful, not fearful. 

The world of athletics has found itself in a precarious position. During the outdoor season, I had a sense there was an elephant in the room and wondered at what point is it going to be discussed, writes Derval O'Rourke. 

Usain Bolt racked up his sixth world title in Moscow to go alongside his half dozen Olympic golds – and then declared he was far from done with winning.

Usain Bolt crowned himself the new Czar of Russia as he lit up the World Track and Field Championships in Moscow last night by winning the 100m in 9.77 while Brian Gregan brought some welcome Irish cheer qualifying for the 400m semi-finals.

Usain Bolt lit up Moscow in the same manner as the real lightning bolts in the Russian skies as the mercurial Jamaican claimed his fourth global 100m title in the Luzhniki rain this evening.

Usain Bolt had just completed his press conference after winning 200 metres gold at the London Olympics, his second title of the Games, and had risen from his seat when he paused for a moment before deciding he had one last message to impart.

Olympic champion Usain Bolt was unable to claim victory in his first Diamond League race of the season as Justin Gatlin continued his impressive form by edging out the Jamaican to win the 100 metres in Rome.

Derval O’Rourke is the standout name of the athletes pre-selected for the European first league team championships at the end of the month.

The man who threw a plastic beer bottle at competitors at the start of the men’s Olympic 100m final was sentenced to an eight-week community order in England today.

A man who got into the Olympic Stadium without a ticket then threw a beer bottle at competitors lining up for the men’s 100m final has been found guilty of public disorder.

A man screamed abuse at Jamaican sprinter Usain Bolt before hurling a bottle at the start line of the men’s Olympic 100m final, a British court heard today.

UCI president Pat McQuaid has dismissed Greg LeMond’s challenge to his authority as “populist” and destined to fail.

In 20 years, no player has yet tested positive for performance-enhancing drugs in the Premier League.

The Dutch world judo champion who hit a man for throwing a bottle on to the track at the start of the men’s 100m final on Sunday night said the blow was an emotional reaction.

A man remained in custody today after a bottle was thrown on to the track at the start of the men’s 100m final at the Olympic Stadium.

Jamaica’s Usain Bolt admitted he was delighted to prove his doubters wrong after retaining his Olympic 100m title in London.

The queues began long before the main event.

Usain Bolt last night fulfilled his dream of becoming a “legend” of the sport by successfully defending his Olympic 100m title in stunning style in London.

Usain Bolt tonight fulfilled his dream of becoming a “legend” of the sport by successfully defending his Olympic 100m title in stunning style in London.

American Ashton Eaton set a new world record in winning the men’s heptathlon title at the World Indoor Championships in Istanbul, but the home nation celebrated the loudest with two medals today.

RESEARCHERS at the University of Limerick have found that placing injured athletes in deep cold is not an effective treatment in muscle recovery.

Usain Bolt today issued an ominous warning to the challengers for his World Championship title with a commanding victory in the heats of the 100 metres in Daegu.