Nadal and Farah were among 26 athletes in Monday's fourth batch to have their medical history published by Fancy Bears, following the likes of Serena and Venus Williams, American gymnast Simone Biles and British Tour de France-winning cyclists Bradley Wiggins and Chris Froome.

There is no suggestion they are involved in any wrongdoing but the leaking of their records has reopened the debate about TUEs and in particular whether the system is open to abuse from competitors gaining an advantage by taking banned drugs.

'Nothing to hide'

The first of Farah's two TUEs was in 2008 for the same drug prescribed to fellow Olympic champion Wiggins - triamcinolone, a type of steroid.

His other exemption was for a saline drip and two pain-killers that the 33-year-old was given after he collapsed in Park City, Utah, where he was training at altitude in 2014.

He originally said this 2014 TUE was his only one at a press conference in Birmingham last June when asked about his coach Alberto Salazar, who remains under investigation by the United States Anti-Doping Agency (USADA).

But a few weeks later in an interview with Sky Sports News he mentioned the 2008 triamcinolone injection.

A spokesperson for Farah said: "As Mo has previously stated, he has got nothing to hide and doesn't have a problem with this or any of his (medical) information being released - as evidenced by the fact that he voluntarily shared his blood data with the Sunday Times last year.

"Mo's medical care is overseen at all times by British Athletics and over the course of his long career he has only ever had two TUEs."