Men’s world 100 metres champion Christian Coleman has appealed his two-year ban for breaching anti-doping whereabouts rules to the Court of Arbitration for Sport (CAS).
The American missed tests on January 16 and December 9 2019, and was also charged with a filing error in connection with an attempted test on April 26.
Coleman accepted the first missed test but challenged the other two rulings, but the Athletics Integrity Unit (AIU) did not find in his favour.
As it stands, the sanction will rule the 24-year-old out of the Tokyo 2020 Olympic Games.
Coleman requested that the decision be “set aside” and the sanction “eliminated.”
In its original decision, the AIU described Coleman’s behaviour as “very careless at best and reckless at worst.”