The revelation that more than a third of competitors at this summer's Olympics may have arrived in Rio without being drugs tested once in 2016 was branded "alarming" by the president of the World Anti-Doping Agency.
Sir Craig Reedie spoke out after a damning report revealed the staggering number of athletes who came to the Games with no record of having taken a dope test during the year.
The Wada-commissioned report by a team of independent observers found this applied to 4,125 of the 11,470 entrants for the Olympics, 1,913 of them in the 10 sports deemed to present the highest risk of cheating, such as athletics, swimming and cycling.
Attempts to rectify the oversight were then hindered by a shambolic anti-doping programme during the Games itself, during which almost 500 fewer tests were conducted than planned, including less than one in 10 scheduled collections of athlete biological passport samples.
Many tests had to be abandoned because competitors could not be located amid swingeing budget cuts, staff shortages and appalling planning. But it was data relating to the pre-Games period that was arguably the most shocking revelation from the independent observer (IO) report.
"If what you say is true, yes, it is alarming," Reedie told The Daily Telegraph about the figures, collated for the first time following the recommendation of the IO team from the Sochi Winter Olympics in 2014.