Mo Farah is hailed as Britain's greatest ever athlete after repeating his Olympic success with a double victory at the World Championships.
He won two Olympic gold medals last year and has already won gold this year in the 10,000 metres but is he the greatest of all time?
As Tour de France leader Froome can attest, the shadow of a drug scandal can linger for years. Athletics must act to avoid this cancer.
Olympic champion Mo Farah has become a double world champion after winning the 5,000 metre finals in Moscow today. Farah is only the second man to hold the 5,000 and 10,000 Olympic and World Championship titles.
Double Olympic champion Mo Farah has said he "is set" for the 5,000 metre race at the World Championships this evening.
All set for tonight...!! Yeeeeezzzzzzzz!!! http://t.co/1dceuovH9d
ITV News London has spoken to Mo Farah's wife Tania on the phone from Moscow, ahead of this afternoon's 5,000m final.
She said Mo sounded "like his normal self" ahead of the race, which could see him winning a historic 'double double' - two medals in two events, as he did at the Olympics.
British heptathlete Louise Hazel told ITV News she is unconvinced by pole vaulter Yelena Isinbayeva's attempt to distance herself from "discriminatory" remarks about Russia's anti-gay law.
The spokesperson for the Russian pole vault world champion Yelena Isinbayeva has told ITV News the athlete is not against gay people and that her comments have been misunderstood.
– Alla Glushchenko, Yelena Isinbayeva's spokesperson
The journalists twisted her words, she didn't say she was anti-gay.
Yelena's a sportswoman, she's not a politician.
She's only against gay propaganda, not against gay people - they can live how they want.
We have no idea what is going on in the UK so we have no comment about her resigning [from her role as youth Olympic ambassador for the Winter Olympics in Sochi in 2014.]
Russian pole vaulter Yelena Isinbayeva has said she may have been "misunderstood" when she made comments condemning homosexuality, according to the Associated Press.
The two-time Olympic gold medalist appeared to back off her comments at the World Championships, after criticising two Swedish athletes who protested against the Russian law banning the promotion of homosexuality.
She said: "English is not my first language and I think I may have been misunderstood when I spoke yesterday.
"I respect the views of my fellow athletes and let me state in the strongest terms that I am opposed to any discrimination against gay people."
British heptathlete Louise Hazel has criticised Russia's pole vaulter Yelena Isinbayeva after she spoke out in support of Russia's controversial laws on homosexuality.
Yelena Isinbayeva's "homophobic" comments have no place in our sport! This is the 21st century! I say bring back Feofanova! #Athletics
Do you agree that as an Ambassador for the Youth Olympic Games the IOC need to discipline Isinbayeva in light of her recent comments?!
Thank you all for your comments and opinions... Lets hope that the IOC take action, it's a shame for this to overshadow the championships!
The Prime Minister said last week that he believes it would be "better to challenge prejudice as we attend" the Winter Olympics in Russia, as calls from athletes to boycott it over its anti-gay laws continue.
Russia's pole vault world champion Yelena Isinbayeva defended the country's controversial new law, however, British heptathlete Louise Hazel said the Russian's position as ambassador for the Youth Olympics was now "ridiculous".
In response to a letter Stephen Fry wrote urging him to back the boycott, David Cameron wrote on Twitter: "I share your deep concern about the abuse of gay people in Russia...However, I believe we can better challenge prejudice as we attend, rather than boycotting the Winter Olympics".
The International Olympic Committee is facing calls to remove pole vaulter Yelena Isinbayeva from her ambassadorial role after she spoke out in support of Russia's controversial laws on homosexuality.
Her comments have attracted widespread criticism from athletes, including British heptathlete Louise Hazel, who said the Russian's position as ambassador for the Youth Olympics was now "ridiculous".
"They (the IOC) should definitely be revising her position as an ambassador," Hazel, who won gold at the 2011 Commonwealth Games, told BBC Sport. "That just seems ridiculous to me.
"I think it should be their first point of call after the [World] Championships are over."
Isinbayeva criticised two Swedish athletes for making statements against Russia's new law, which makes it illegal to give under-18s information about homosexuality.