China's hopes of repeating their 2012 Olympic sweep of all five badminton gold medals are shattered when both their pairs are knocked out in the semi-finals of the mixed doubles.

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.

Rafael Nadal describes his second Olympic gold as "unforgettable" after marking his return from his latest injury misery by partnering close friend Marc Lopez to the men's doubles title in Rio.

In just one performance, Singapore's Joseph Schooling beats swimming great Michael Phelps, takes home his city state's first Olympic gold medal and becomes an instant millionaire.

Beefy Kazakh swimmer Dmitriy Balandin put the former Soviet state on the Olympic map by winning his country's first gold medal in the sport.

Around a giant screen showing the Olympics in a central New Delhi park, young Indians chat, take selfies or snooze in the late afternoon heat, glancing only occasionally at the heroic sporting feats on display.

Serena Williams' hopes of a fifth Olympic gold medal are crushed by Ukraine's Elina Svitolina as the battle for the women's title in Rio is blown wide open.

In an unforgettable display of Olympic power Michael Phelps wins two more finals to take his historic all-time record load to 21 golds and entrench his legendary status.

The 84-year-old grandmother of a Thai Olympic bronze medal winner collapses and dies while celebrating the weightlifter's success in Rio, police say.

Michael Phelps makes all the difference as he wins the 19th Olympic gold medal of his astonishing career and helps the U.S. men's team to victory in the 4x100 meters freestyle relay.

Brazil has barely got over its World Cup disaster and now it is counting on Barcelona star Neymar to finally deliver a treasured first football Olympic gold medal.

"My biggest dream at the Olympics is to win three gold medals again. That's my focus, that's what I want," Bolt says in an interview.

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.

Jamaican Olympic relay gold medallist Nesta Carter's "B" sample for the use of a banned stimulant at the 2008 Beijing Games has returned positive, two sources familiar with the case told Reuters on Wednesday.

An Olympics triumph can make you a hero in any country but legendary status awaits Abdullah Hel Baki if he can finally rid Bangladesh of an unwanted distinction, the biggest nation never to win a medal.

The Bangladesh Olympic Association (BOA) express its concern over noncooperation of coaching staff towards swimming coach Park Tae Gun, who helped Bangladesh win two gold medals in the South Asian Games held in India in February.

Saturday was a day to remember for Ritchie de Laet, who managed the unprecedented feat of winning the Premier League and securing promotion to the Premier League on the exact same afternoon.

Bangladeshi athletes Mahfuza Khatun and Mabia Akter Simanta win gold medals in swimming and weightlifting events at the 2016 South Asian Games in India.