The 37-year-old, who is the only one to beat sub-two-hour man Eliud Kipchoge in a marathon, is suspected of two different types of doping violations: Deficiencies in stay reporting and manipulation of tests, writes the site Lets Run, among others. If Kipsang falls, he risks up to four years of suspension.
Kipsang is the premier male marathon runner ever caught in a doping test. In 2013 he set a world record with time of 2.03.23 in Berlin.
On Kipsang's side, one denies the suspicions:
- At this stage it is only a matter of suspicion. We emphasize that there is no case of using doping. No banned substance has been found, writes Kipsang's stable.
Kenya is one of the countries that the International Athletics Association, World Athletics (formerly the IAAF) has under special supervision. About 40 active are turned off.