Kammala wannan jumla: Douglas ya wakilci Birtaniya a gasar Olympics ta 2008, a cikin mita 100. A zagayen farko ta kasance ta biyu a bayan Ivet Lalova a cikin lokaci na 11.36 don ci gaba zuwa zagaye na biyu. A can ta kasa cancanta zuwa wasan kusa da na karshe kamar yadda lokacinta na 11.38 shine kawai na huɗu mafi sauri a lokacinta, wanda ya haifar da fitarwa. Ta kuma kasance wani ɓangare na tawagar Birtaniya wanda ya kai wasan karshe na gasar cin kofin duniya.
4x100 mita relay, kuma wanda (tare da tawagar Jamaica) sun fi so su nemi lambar yabo. Jeanette Kwakye ta yi tsere mai kyau a zagaye na farko a wasan karshe, amma tawagar Burtaniya ta kasa gamawa saboda wani rikici a canjin canji tsakanin Douglas da Emily Freeman. Jamaica kuma ta kasa gamawa bayan irin wannan kuskuren tsakanin Sherone Simpson da Kerron Stewart.