Buuxi weedha soo socota: Bishii Febraayo 2013, Derrick wuxuu ku guuleystay US Senior Men 12,000 mitir USA Cross Country Championships 35:38 ee Forest Park ee St. Louis Missouri, si uu ugu qalmo
2013 IAAF World Cross Country Championships halkaas oo uu kaalinta 10-aad galay.