Rubuta ci gaba don wannan sakin layi - Wasannin All-Africa na 2007 sun wakilci nasara mai mahimmanci ga Zersenay: ya zama dan wasan Eritrea na farko a tarihin gasar, kuma ya lashe lambar zinare ta farko a kan hanya, ya lashe nasara a wasan karshe na mita 10,000 tare da rikodin wasanni na 27:00.30. A watan da ya biyo baya ya yi gasa a Gasar Cin Kofin Duniya ta 2007 a Wasannin motsa jiki, kuma ya kusa kusa da gamawa <unk> ya jagoranci tseren mita 10,000 zuwa alamar kilomita 8, yana saurin sauri, amma a ƙarshe ya ƙare a matsayi na huɗu. Da yake shirya gasar zakarun hanya a wannan shekarar, ya yi tseren mil 10 na Dam tot Damloop a watan Satumba kuma ya ci nasara a 45:51 (mafi sauri a duniya a wannan kakar), ya gama nesa da masu tsere Bernard Kipyego da James Rotich. Zersenay ya jaddada matsayinsa a matsayin daya daga cikin 'yan tseren rabin marathon mafi rinjaye a duniya tare da nasara ta biyu a 2007 IAAF World Road Running Championships
a birnin Udine, Italiya. Kodayake ya kasance kusa da saurin rikodin duniya a wurin kilomita 15, ya yi jinkiri a bayan manyan rukuni na Makau Musyoki, Evans Kiprop Cheruiyot da Deriba Merga. A cikin kilomita na ƙarshe, ya yi tsalle don ya jagoranci kuma ya lashe lambar zinare, ya kafa tarihin kasa da na gasar zakarun duniya na 58:59 a cikin tsari. Bayan wadannan nasarorin, wani rukunin likitoci sun yi nazarin tattalin arzikinsa na gudana kuma sun gano cewa yana ɗaya daga cikin masu tsere mafi inganci da aka taɓa gwadawa.