<p>Men's 100-meter world champion Christian Coleman was banned for two years because of three violations of doping control rules.</p>.<p>Track and field's Athletics Integrity Unit said Coleman will be banned until May 2022, forcing him to miss the Tokyo Olympics next year.</p>.<p>The 24-year-old American sprinter had been provisionally suspended from competition since May. Weeks later, details of his three missed appointments with sample collections officials in 2019 were revealed.</p>.<p>Athletes face a two-year ban if they have three violations of so-called "whereabouts" rules in a 12-month period.</p>.<p>Coleman can appeal his ban at the Court of Arbitration for Sport.</p>.<p>He was favored to win Olympic titles after taking gold in the individual 100 and 4x100 relay at the 2019 world championships in Doha, Qatar.</p>.<p>Coleman was able to run there after a previous whereabouts case against him was dropped.</p>.<p>He got silver in both events at the 2017 worlds in London.</p>
<p>Men's 100-meter world champion Christian Coleman was banned for two years because of three violations of doping control rules.</p>.<p>Track and field's Athletics Integrity Unit said Coleman will be banned until May 2022, forcing him to miss the Tokyo Olympics next year.</p>.<p>The 24-year-old American sprinter had been provisionally suspended from competition since May. Weeks later, details of his three missed appointments with sample collections officials in 2019 were revealed.</p>.<p>Athletes face a two-year ban if they have three violations of so-called "whereabouts" rules in a 12-month period.</p>.<p>Coleman can appeal his ban at the Court of Arbitration for Sport.</p>.<p>He was favored to win Olympic titles after taking gold in the individual 100 and 4x100 relay at the 2019 world championships in Doha, Qatar.</p>.<p>Coleman was able to run there after a previous whereabouts case against him was dropped.</p>.<p>He got silver in both events at the 2017 worlds in London.</p>