World Anti-Doping Agency

In a scathing report released earlier this month, McLaren and his team found that the IWF had been plagued by decades of corruption and also discovered the doping infractions.

These include gold and silver medallists who have not had their samples dealt with.

McLaren's investigation determined that the IWF's former president Tamas Ajan used "the tyranny of cash" to maintain control and the primary sources of this money came from doping fines paid personally to him.

A Wada-commissioned report found urine samples of Russian competitors were manipulated across the "vast majority" of summer and winter Olympic sports from late 2011 to August 2015.

The International Olympic Committee (IOC) will decide on Tuesday whether to provisionally ban Russia from the Rio Olympics, which start on 5 August.

IOC president Thomas Bach will host a telephone conference call to decide on "provisional measures and sanctions".

After reports that a number of athletes coached by former Boston and New York Marathon winner Alberto Salazar use the medication, the British anti-doping agency and others asked WADA to consider putting it on its banned-substance list.

But when the list came out last week, that medicine wasn't on it.

The figure, the second consecutive annual fall, is contained in a WADA report on all tests analysed by WADA-accredited laboratories in 2014 and entered on its Anti-Doping Administration & Management System (ADAMS).

What the report cannot do, of course, is answer the $64,000 question: does this decline mean that fewer athletes in Olympic sports are attempting to use drugs to gain an illicit edge, or does it rather reflect that those who do are getting better at evading detection?