Marathoner Banned Three Years for Doping
Marathoner Mathew Samperu has been banned for three years following a doping admission, with all results since November 23 disqualified including medals, titles, and prize money. The ban reinforces ongoing battles against doping in endurance sports and the importance of clean competition.
The positive test for Mathew Samperu came from an in-competition urine sample taken after he won the Pertamina ECO Runfest half-marathon in Jakarta, Indonesia on November 23, 2025. A World Anti-Doping Agency (WADA) accredited lab in Bangkok found the presence of testosterone and its metabolites. As a result of the ban, Samperu's win in the Jakarta half-marathon and his subsequent silver medal finish at the Standard Chartered Singapore Marathon on December 7, 2025, have both been disqualified. He will forfeit all medals, titles, points, and prize money from competitions on and after November 23, 2025. The standard ban for the presence of a non-specified substance like testosterone is four years. However, the Athletics Integrity Unit (AIU), the independent body that handles anti-doping for athletics, reduced Samperu's suspension by one year because he formally admitted to the violation on February 14, 2026, and waived his right to a hearing. Initially, Samperu claimed an injection of methylprednisolone for hip pain was the cause of the positive test, but the AIU determined this did not explain the findings for exogenous testosterone. His three-year ban is effective from the date of his provisional suspension, January 23, 2026, and will run until January 22, 2029. Samperu's case is part of a persistent issue in Kenyan athletics, a "Category A" nation deemed by the AIU to have the highest doping risk. The country has seen a significant number of its athletes, including high-profile marathon winners, suspended for doping violations in recent years. In response to the widespread problem, the Kenyan government has pledged $5 million annually for five years to enhance anti-doping efforts. This funding supports increased testing, education, and oversight by bodies like the AIU and the Anti-Doping Agency of Kenya (ADAK) to protect clean athletes.
