The Court of Arbitration of Sports (CAS) has upheld the Athletics Integrity Unit (AIU) decision to ban former Commonwealth Games 10,000m champion Joyce Chepkirui.
In 2019, Chepkirui was suspended for Athlete Biological passport (ABP), which is a violation of anti-doping rules and has been handed four years of ban.
CAS upheld the appeal filed by the AIU and her four-year period of ineligibility has been back-dated to start from 28 June 2019.
Her results from April 6, 2016 and August 4, 2017 that include her bronze medal at the Boston Marathon in April 2016 has been revoked.
Chepkirui is the 2014 Commonwealth Games 10,000m champions and also the 2014 African 10000m champion.
She also won the 2015 Amsterdam Marathon title before placing third at the Boston Marathon and fourth at the New York City Marathon in 2016.