Kenyan marathoner Esphond Cheruiyot has received a doping ban after a swift admission of guilt. He tested positive for Trimetazidine following his second-place finish at the Buenos Aires International Marathon on September 21, where he made his debut.

• Cheruiyot signed a confession on the very day he was notified of his positive test, a rare occurrence that led to a reduced ban.
• The Athletics Integrity Unit (AIU) confirmed the presence of Trimetazidine, a metabolic modulator, in his urine sample analyzed by a World Anti-Doping Agency (WADA) accredited laboratory in Barcelona, Spain.
• His prompt admission reduced his ban by one year, and all his results from September 21, 2025, have been nullified.