Mezue ahịrịokwu na-esonụ: Na February 2015, Derrick meriri nke atọ ya na-esote US Senior Men 12,000 mita USA Cross Country Championship na 36:18, na Boulder, Colorado iji ruo eruo maka
2015 IAAF World Cross Country Championships na Guiyang, China, ebe o tinyere 24th.