Buuxi weedha soo socota: Markii uu jiray afar iyo soddon, Kejzar wuxuu markii ugu horreysay u soo bandhigay ciyaaraha Olombikada xagaaga ee 2000 ee Sydney, halkaas oo uu ka galay lixdan iyo laba ka mid ah boqol orodyahan oo ka qaybgalay orodka orodka ragga, oo leh waqti dhan 2:26:38, afar iyo toban ilbiriqsi oo ka dambeeya tan Tansaaniya Zebedayo Bayo. Wuxuu soo bandhigay waxqabad aad u fiican ciyaarihii Olombikada ee 2004 ee Athens, markii uu dhammeeyay 54aad tartanka.
marathon markii labaad, isagoo dhaliyey waqtigiisii ugu fiicnaa ee ciyaaraha Olombikada oo ahaa 2:23:34.