Allyson Felix clinches a record sixth career Olympic gold as the United States win the 4x400m relay for a sixth straight Games.

Britain's Mo Farah completes a historic Olympic distance double double with victory in the 5,000m as American runner Matt Centrowitz scores an upset win to claim gold in the 1,500m.

The runners who have lost to Usain Bolt for the past dozen years shower the Jamaican superstar with praise, after he completes his historic "triple-triple" in what he has said will be his final Olympics.

Allyson Felix becomes the first woman athlete with five gold medals as she powers the US sprint relay team to victory.

Factfile on Usain Bolt after his victory in the 200m at the 2016 Rio de Janeiro Olympics Thursday.

Kristi Castlin dedicates her 100m hurdles medal to victims of gun violence after helping the United States claim a historic podium sweep in the event.

Usain Bolt will race the 200m final on Thursday after comfortably winning his semi-final, but there is no place for American rival Justin Gatlin as he fails to qualify.

Jamaica unleashes a new sprint sensation as Omar McLeod takes the Rio Olympics 110m hurdles on Tuesday.

Cao Yuan shakes off the pressure of being the only Chinese diver left in the field -- a rarity in Olympic finals -- to deliver China's fifth diving gold medal.

Canada's Derek Drouin overcomes a quality field to add the Olympic high jump crown to his world title after a cliff-hanger of a final in Rio.

Kenya's Faith Kipyegon produces a startling last-lap sprint to outpace favourite Genzebe Dibaba of Ethiopia to win the Olympic women's 1500m gold.

David Rudisha seals a historic Olympic 800m double as Shaunae Miller's audacious dive and Thiago Braz da Silva's pole vault gold for Brazil light up a wet Monday night in Rio.

The battle to be crowned world's fastest man takes centre stage at the Rio Olympics on Sunday with Usain Bolt facing another showdown with Justin Gatlin where the image of athletics will be on the line.

With crimson lipstick, eye-liner, mascara and a beaming smile, Michelle Carter wins a stunning Olympic shot put gold to sprinkle a little glitz on an event often cruelly ridiculed for the shape of its women athletes.

American teenager Lilly King celebrates stopping tainted Russian swimmer Yulia Efimova from getting an Olympic gold as doping hostilities worsen in Rio.

Shimmying amid a troupe of semi-naked samba dancers and wise-cracking with journalists, Usain Bolt is determined to bow out of the Olympics with a flourish.

A joyful sashay through Brazil's extraordinary musical heritage is infused with a social message and a warning over the dangers of climate change as Rio de Janeiro draws back the curtain of the 2016 Olympic Games with a highly charged opening ceremony.

Usain Bolt is promising to let American sprinter Justin Gatlin "feel his full wrath" as he zones in on an unprecedented treble-treble of gold medals at the Rio de Janeiro Olympics.

A sharp increase in police killings has cast "a shadow of death" over Rio de Janeiro as it prepares to host the Olympic Games, Amnesty International claim in a report.

For as long as athletes have been battling for gold medals, they have been taking fortifying tonics, some stomach-churning, others downright dangerous with little concern for their health.