Rubuta ci gaba ga wannan sakin layi - 2.A watan Mayu 2014, Amurka 4 × 100 mita relay
dan wasan kungiyar Tyson Gay ya sami dakatarwar shekara daya don amfani da magungunan anabolic steroid kuma an cire shi daga lambobin sa bayan 15 ga Yuli 2012 lokacin da ya fara amfani da shi. A watan Mayun 2015, IOC ta rubuta wa kwamitin Olympic na Amurka yana gaya musu su tattara lambobin yabo daga abokan wasan Trell Kimmons, Justin Gatlin, Ryan Bailey, Jeffery Demps da Darvis Patton. Biyu daga cikin 'yan wasan Gay da suka gudu tare da shi a wasan karshe, Kimmons da Bailey, sun riga sun dakatar da dakatar da su. An sake rarraba lambobin yabo, tare da Trinidad da Tobago da aka ba da azurfa, kuma Faransa ta ɗauki tagulla.