<prompt> Bhala ukuqhubeka kwalesi sigaba - 2.NgoMeyi 2014, i-US 4 × 100 metres relay  <response>: Ilungu leqembu uTyson Gay wathola ukumiswa unyaka owodwa ngenxa yokusebenzisa i-anabolic steroid futhi waphucwa izindondo zakhe ngemuva kuka-15 Julayi 2012 lapho eqala ukusebenzisa. NgoMeyi 2015, i-IOC yabhalela i-US Olympic Committee ibatshela ukuthi baqoqe izindondo kozakwabo uTrell Kimmons, Justin Gatlin, Ryan Bailey, Jeffery Demps noDarvis Patton. Abalingani bakaGay ababili abagijima naye emdlalweni wokugcina, uKimmons noBailey, nabo babekade bekhishiwe. Izindondo zahlukaniswa kabusha, iTrinidad neTobago yanikezwa isiliva, iFrance yathola ithusi. 