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Shadrack Biwott

The U.S. Anti-Doping Agency announced on Wednesday that an independent arbitrator has handed Shadrack Biwott a four-year ban following a hearing stemming from his presentation to defend himself against claims that a drug test on showed evidence of erythropoietin (EPO), a restricted substance. According to a report released by USADA, Biwott's out-of-competition on January 25, …

Ruth Chepngetich

Ruth Chepngetich, the women's world record holder in the marathon, was issued a provisional suspension after testing positive for banned substance, the Athletics Integrity Unit announced on Thursday. According to the AIU, hydrochlorothiazide was detected in a sample that was collected on March 14 and a further investigation confirmed in April that 3,800 nanograms per …

USADA announced today that Michael Vowell, a coach in the sport of track and field, and Seth Vowell, an athlete in the sport of track and field, both of Richmond, Texas, have accepted sanctions for anti-doping rule violations.

A Richmond, Texas track and field coach was handed a lifetime ban by the U.S. Anti-Doping Agency on Monday after an investigation revealed he provided his 16-year-old son with testosterone, who received a two-year suspension. According to USADA, Michael Vowell provided his own prescription testosterone gel to his son at the 2023 USA Track and …

Daniel do Nascimento

Daniel do Nascimento was handed a five-year ban by the Athletics Integrity Unit on Wednesday after an out-of-competition sample from 2024 revealed the presence of three banned substances. do Nascimento, 26, missed the 2024 Paris Olympic men's marathon following the positive test that was taken on July 4, 2024 during a training session in Kenya. …