Floyd Mayweather has been named 'special adviser' to China's boxing team as they look to improve their medal count at the 2020 Tokyo Olympics. 

University of Ottawa professor Amir Attaran has accused the World Health Organisation (WHO) of putting unborn children at risk by letting August's Olympics go ahead as planned.

University of Ottawa's Amir Attaran recently wrote an article in the Harvard Public Health Review, saying the Olympics should be moved from Rio to prevent a 'full-blown global health disaster'.

More than 200 academics have now signed an open letter to the World Health Organisation calling for the Olympics to be postponed. But is it really necessary? Virus expert Dr Derek Gatherer gives his views.

The British long-jumper has frozen samples of his sperm amid fears about the Zika virus at this summer's Olympic Games in Rio. The virus can cause birth defects and be transmitted through sex.

The Northern Ireland sportsman was due to compete in the sporting event in August. But he said today that it was a risk he was 'unwilling to take'.

With the Zika virus casting a cloud hanging over the Olympics Games, several athletes have opted out with many more taking precautions. MARTHA KELNER answers the key questions...

The retired swimming champion questioned whether the game's big stars, including Rory McIlroy and Jason Day, were 'not going because they just don't want to go' to Rio de Janiero in Brazil.

Montgomerie, who was part of the delegation which presented golf's Olympic bid in 2009, also questioned the disparity between the number of men and women to have so far withdrawn.

A dozen staff are threatening to follow sports journalist Richard Conway (pictured) who is said to have told bosses he is bowing out of the event in Rio de Janeiro, Brazil.

Hope Solo took to Twitter to Friday to document her extensive Zika arsenal laid out on her bed – adding: 'If anyone in the village forgot to pack repellent, come and see me… #DeptofDefense #zikaproof.'

Scientists at Yale University have calculated only three to 37 people will bring the mosquito-borne disease back to their countries - in a worst-case scenario.

Australian team boss Kitty Chiller confirmed on Monday a laptop and some Zika-protective shirts were stolen during a fire evacuation on Friday when a blaze was sparked by a cigarette.

American goalkeeper Hope Solo was heavily booed during Team USA's opening soccer match in the Rio Olympics.

The athletes who have decided to attend may be competing under the arms of Christ the Redeemer, but it’s hard to find one redeeming feature to the Olympic Games in Rio, writes KATIE HOPKINS.

Herbalists and witch doctors in Rio de Janeiro say star athletes who skipped this year's Olympic Games shouldn't have worried about contracting Zika while in Brazil.

Torrential rain and high winds became the latest misfortune to hit the Rio de Janeiro Olympics, with rowing events canceled and other athletes including cyclists forced to cope with the bad weather.

TeamGB taekwondo champion Jade Jones kicked her way Olympic history when she won gold to make her the most successful Briton in her sport.

Australian swimmer-turned-commentator, Giaan Rooney, has announced she's pregnant with her second child, just months after travelling to Brazil amid the Zika virus concerns

The Paralympic table tennis star, 31, who participated in the competition series with professional dancer Janette Manrara for six weeks, spoke to The Sun

The Paralympics has been added to the 'crown jewels' list of sports events which must be broadcast live on free-to-air TV - but cricket has been controversially overlooked.

A leading global health scientist has said that it is 'very unrealistic' that the Tokyo Olympics and Paralympics will take place next year unless a vaccine is discovered by then. 

The Queen had only one request for her appearance with James Bond at the opening of the 2012 London Olympics - that she could deliver the line: 'Good evening, Mr Bond.'

Laura Trott added the women's omnium world title to the team pursuit gold at the world championships in Melbourne on Saturday.

Double world champion track cyclist Laura Trott opens up to Sportsmail on her admiration for Victoria Pendleton, her love of Britney Spears and a strange chocolate habit.

Glenda Trott took her family to a cycling track because she was desperate to lose weight. She lost seven stone and introduced her daughter to a sport she excelled at.

In one phrase, petite Laura Trott, Essex girl and now double Olympic champion, became the embodiment of British Cycling. ‘Once I got that winning feeling that was it, I really didn’t want to not win,’ she said.

When I started cycling, Laura Trott was the Under 12 national champion and I was good friends with her older sister Emma. I remember telling Emma I'd heard how good she was.

Just over a year ago, Laura Trott was a promising youngster who thought she would get her chance at an Olympics in 2016. Today the twenty-year-old is the proud owner of TWO Olympic gold medals.

The blonde 5ft 4in cyclist from Cheshunt, Hertfordshire is lucky to be alive after she was born a month prematurely suffering from a collapsed lung.

They are the new king and queen of the track cycling. And it seems Laura Trott and Jason Kenny are ready to rule Britannia together for many years to come.

Laura Trott is as happy as it is possible to be. She has the Olympic rings painted on to her fingernails, a smile to illuminate the room and two, large gold medals hanging around her neck.

Hero cyclist Laura Trott has become the most successful female British Olympian of all time after claiming her third gold medal in the women's team pursuit.

Team GB will be targeting another clutch of medals as the Olympic Games enters its 11th day in Rio. Join Sportsmail's LUKE AUGUSTUS for all the action from Brazil as it happens.

Over the last two weeks the Olympics have provided moments of brilliance, joy and excitement across 28 sports in Rio. Sportsmail brings you the best 50 images from the games...

Laura Kenny's dream of winning three gold medals at the Tokyo Olympics is in doubt after she was declared only fit enough to race in one event at next week's track cycling World Championships. 

RIATH AL-SAMARRAI: Sir Mo Farah has put the brakes on his marathon career to target a fifth Olympic 10,000m gold in Tokyo next summer.

Tokyo 2020 organisers have been forced to act in the face of serious warnings over the risk to the athletes in summer temperatures that regular exceed 35 degrees and 80 per cent humidity.

Prominent Paralympians have criticised champion Australian hurdler Sally Pearson for an 'offensive' and 'silly' remark she made following a traumatic fall that left her screaming in agony.

Olympic hurdles champion Sally Pearson (pictured) said she no longer feels the need to conform to other people's expectations of her no matter what they think.

The 29-year-old has spent much of the year battling back from a serious wrist injury, and was disappointed with her results on her comeback at meeting in Birmingham earlier this month.

IAN HERBERT: The cries are laughable if anyone could find it within them to raise a smile about this mendacious, risible, pariah sporting nation.

The iconic start to Tokyo's 2020 Olympic Games will be held without spectators as it was announced the traditional torch-lighting ceremony will take place with no fans in attendance.

Between promotional posts and ads for her SKIMS clothing line, Kim Kardashian, 39, made sure to post some pictures of her both her eldest and youngest children on Saturday.

Kim Kardashian showed off her bombshell beach body in a sizzling new set of seaside pictures on Instagram. She flashed her sculpted midriff as she posed up a storm by the sea.

Richard Kilty hit out at Great Britain’s big name sprinters for their no-show in the Caribbean after they failed to qualify a team for the 4x100m at the Rio Olympics next year.

I can’t wait for Rio 2016! It’s come around so quickly – it feels like London 2012 was last week. But hopefully I’ll be in good shape next year, make that team and do everyone proud.

CHRIS MEARS - ROAD TO RIO: I’ve not made any New Year’s resolutions, I feel pretty on top of everything at the moment so I’m just going to carry on what I’m doing because I think I’m on to a winner.

I'm really looking forward to the Olympics - and it's crazy how quickly it's coming around - but at the moment I'm trying just to focus on the European Championships.

The 29-year-old Brit Greg Rutherford, also the reigning world and European champion, posted a season best of 8.31metres in the second round to dominate the event.