American sprinter and reigning 100-meter world champion Christian Coleman has been banned from competition for two years after missing a series of doping tests, the Athletics Integrity Unit ruled Tuesday.
The decision means that, barring a successful appeal, the man who was favored to win gold at the Tokyo Olympics next summer will instead be barred from participating.
The Games were postponed to 2021 due to the coronavirus pandemic.
Coleman, 24, was provisionally suspended in June after missing three tests in a 12-month period in 2019. He wrote on Twitter at the time that he did not contest the first two missed tests, in January and April, but believed the third missed test in December "was a purposeful attempt to get me to miss a test.