LAUSANNE, Switzerland -- Dinamo Zagreb midfielder Arijan Ademi has testified at the Court of Arbitration for Sport to fight his four-year ban for doping in the Champions League.
CAS says Ademi appeared in person on Friday to appeal against UEFA, which judged it a serious first offense. A verdict is expected within weeks.
Ademi tested positive for the anabolic steroid stanozolol after Dinamo's 2-1 win over Arsenal in September 2015.
In his UEFA appeal case, the 25-year-old Macedonia midfielder blamed a contaminated batch of a supplement called Megamin.
UEFA dismissed the player's evidence that food testing laboratories in the Netherlands and United States found steroid traces in supplement tablets.
UEFA called that evidence "absolutely invalid" because the labs received tablets "in unsealed and even damaged containers, which clearly subjected them to external manipulation."