Joyline Chepngeno admits anti-doping violation, accepts 2-year ban

Kenyan long-distance runner Joyline Chepngeno has admitted to violating anti-doping rules following a positive test result from the Sierre-Zinal World Cup race held in Switzerland on August 9, 2025.

In a written statement to the Athletics Integrity Unit (AIU) dated September 8, Chepngeno explained that she had received an injection in July 2025 to treat persistent knee pain.

She stated that she was unaware the injection contained a banned substance and expressed deep regret over the incident.

‘I did not know the medication I received was prohibited,’ she wrote, adding that she was sorry for the mistake and accepted full responsibility.

On the same day, Chepngeno submitted a signed admission of the Anti-Doping Rule Violation and agreed to the consequences outlined by the AIU.

Following her admission, the AIU confirmed that this was Chepngeno’s first violation and that there was no evidence to suggest the use of the substance was intentional.

In line with the World Anti-Doping Agency (WADA) guidelines and the applicable rules, a two-year period of ineligibility has been imposed.