Kammala wannan jumla: Guor Marial ya yi gasa a gasar
tseren marathon na maza a wasannin Olympics na 2012. Saboda Sudan ta Kudu har yanzu ba ta da kwamitin wasannin Olympic na kasa (NOC), Marial ta yi gasa a karkashin tutar Olympics a wasannin Olympics na 2012, maimakon tutar Sudan ta Kudu. Yana ɗaya daga cikin 'yan wasa huɗu da suka yi gasa a wasannin Olympics na bazara na 2012 a ƙarƙashin tutar wasannin Olympic maimakon ta wata ƙasa.