Kammala wannan jumla: A kakar wasa ta 2003 Zersenay ya tabbatar da kansa a matsayin mai tasowa a tseren ƙasa: ya shiga cikin goma na farko a gasar zakarun Turai.
2003 IAAF World Cross Country Championships, kuma ya gama a cikin manyan uku a duk tserensa shida a Turai a wannan hunturu. Nasarar mita 5000 a KBC Night of Athletics ta kawo Zersenay rikodin Eritrea na 13:11.07, da kuma wani wuri a Gasar Cin Kofin Duniya ta IAAF a Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin A Gasar Cin Kofin Duniya ta 2003, ya inganta rikodin sa zuwa 13:05.57 kuma ya gama a matsayi na takwas a wasan karshe na mita 5000. Ƙarin ci gaba ya zo ne a Gasar Rabin Marathon ta Duniya a Vilamoura, Portugal, inda ya rubuta mafi kyawun lokaci na 1: 01:26 don gamawa a matsayi na bakwai.