Eritrean teenager Ghirmay Ghebreslassie claimed the first gold of the Beijing World Athletics Meet when he sprinted away for a comfortable victory in the men's marathon today. The 19-year-old took the lead from Lesotho's Tsepo Ramonene Mathibelle on the 36 km mark at Beijing's iconic Bird's Nest stadium.Ghebreslassie racing just his third marathon, clocked 2hr 12 min 27sec. Tsegay took silver in 2 hrs 13 min 07 sec and Munyo Solomon Mutai of Uganda claimd bronze clocking 2 hrs 13 min 29 secIt was Eritrea's second ever world medal after Tadesse Zersenay's silver in the 10,000 metre in the 2009 worlds in Berlin.