Earlier today, Sports Illustrated confirmed US pole vaulter Sam Kendricks had tested positive and is out of the Tokyo Olympic games.
As a matter of precaution, Australians and others identified as close contacts will now be tested and will await their results.
Results can be returned in about six hours, but that will be a long six hours for those waiting to have their concerns confirmed or put aside, not to mention the stress of having training cut short.
This is precisely the scenario many had predicted ahead of the games and now the system will be tested in full.