Kammala wannan jumla: A sana'a, Mitrea ya fara yin hukunci a gasar zakarun kasa a shekarar 2009 kuma ya yi nasara a gasar rugby ta Turai a lokacin gasar zakarun Turai a shekarar 2009.
2011<unk>12 Pro12 - wasansa na farko shine Connacht da Scarlets a ranar 10 ga Satumba 2011. Ya kuma fara wasa a matakin Turai, yana yin hukunci a lokacin gasar cin kofin Turai ta 2011-12 kafin ya yi tsalle zuwa gasar cin kofin Heineken a shekarar 2013.