Buuxi weedha soo socota: 2012 Imtixaanka Olombikada Mareykanka ee Omaha, Nebraska, oo ah isugu imaatinka Mareykanka ee Olombikada 2012, Gemmell wuxuu ka mid noqday kooxda Olombikada Mareykanka markii ugu horreysay isagoo ku dhammeystiray kaalinta koowaad ee 1,500 mitir oo qaab xor ah 14:52.19. Ciyaaraha Olombikada ee 2012 ee London, wuxuu kaalinta sagaalaad ka galay heerarka hordhaca ah ee
1,500-mitir oo qaab xor ah oo leh waqti 14:59.05, oo aan ka mid noqon sideeda ugu sareysa ee finalka dhacdada.