The Japanese Olympic silver medallist won his appeal after the panel found a reasonable non-doping explanation for abnormal biological readings, allowing him to compete again.
The Court of Arbitration for Sport (CAS) has overturned Japanese race walker Koki Ikeda’s four-year doping ban, concluding that the anti-doping charge was not established. The ruling allows the Tokyo Olympic silver medallist to return to competition immediately, Al Jazeera reported on October 23.
Ikeda was provisionally suspended in November 2024. The Athletics Integrity Unit imposed the four-year sanction in February 2025 for allegedly using or attempting to use a banned drug. He rejected the allegations and appealed to CAS in March 2025.
World Athletics had alleged blood manipulation based on abnormalities in Ikeda’s Athlete Biological Passport, a record of his biological readings. According to Al Jazeera, the CAS panel accepted that several readings were abnormal but found a reasonable non-doping explanation for them.
CAS said Ikeda supplied substantial medical and expert evidence, giving the panel a broader factual basis than had been available during the World Athletics tribunal proceedings. The decision turned on the explanation and evidence in Ikeda’s case, rather than a rejection of the abnormal readings themselves.
The appeal body concluded that no ban should apply. Ikeda, who also won silver in the 20km race walk at the 2022 World Championships, is immediately eligible to compete again.
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