Rubuta ci gaba don wannan sakin layi - Mamashayev ya wakilci Kazakhstan a gasar Olympics ta 2008 a Beijing, inda ya yi gasa a wasan marathon na maza
Ka yi haƙuri. Ya yi nasarar kammala tseren a matsayi na saba'in da dakika goma sha tara a bayan Seteng Ayele na Isra'ila, tare da lokacin 2:30:26.