Kammala jumla mai zuwa: A Wasannin Commonwealth na 2006 a Melbourne, Koudinov shi ne mafi ƙanƙanta wakilin New Zealand. Ya halarci kowane bugu na gasar zakarun duniya, tun
2007 a Stuttgart, Jamus. Ya kasance daya daga cikin 'yan wasan motsa jiki uku na New Zealand da suka yi gasa a wasannin Olympics na bazara na 2016 a Rio; sauran biyun sune Courtney McGregor da Dylan Schmidt.