PARIS, France (AFP)—World champion sprinter Christian Coleman has been banned from athletics for two years for anti-doping violations, the Athletics Integrity Unit (AIU) announced on Tuesday.

The American, who won the men’s 100 metres at last year’s world championships in Doha, was provisionally suspended for three ‘whereabouts failures’ in June.

World Athletics’ Disciplinary Tribunal upheld the charge and banned Coleman for two years, backdated to 14 May, 2020.

The 24-year-old has 30 days to appeal the decision at the Court of Arbitration for Sport.

He is set to miss next year’s Olympic Games in Tokyo, where he would have been among the favourites to win 100m gold.

Coleman, who is also the 60m world record holder, only ran in the 4x100m relay heats in his first Olympic appearance in Rio de Janeiro four years ago.

The AIU charged Coleman for missed tests in January and December 2019, as well as for a “filing failure” last April.

To prove an anti-doping violation, an athlete has to have committed three whereabouts failures within 12 months.

Coleman previously escaped suspension on a technicality ahead of last September’s World Championships.

Those three whereabouts failures were recorded on June 6, 2018, January 16, 2019 and April 26, 2019.

However, Coleman had successfully argued that the first missed case should have been backdated to the first day of the quarter — April 1, 2018 — meaning the three failures fell just outside the required 12-month period.

But now the missed test on December 9, 2019, added to the two failures in January and April, have seen Coleman suspended.

“I think the attempt on December 9th was a purposeful attempt to get me to miss a test,” Coleman said after he was charged in June.

“Don’t tell me I ‘missed’ a test if you sneak up on my door (parked outside the gate and walked through…there’s no record of anyone coming to my place) without my knowledge.”