Kammala jumla mai zuwa: Lokacin 2003 ya ga Zersenay ya kafa kansa a matsayin mai tasowa a cikin ƙasa: ya shiga cikin goma na farko a 2003 IAAF World Cross Country Championships, kuma ya gama a saman uku a cikin 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 a
Gasar Tseren Rabin Marathon ta Duniya a Vilamoura, Portugal, inda ya yi rikodin mafi kyawun lokaci na 1: 01:26 don kammala a matsayi na bakwai.