Rubuta ci gaba don wannan sakin layi - A watan Mayu 2015, an kira Marshall a cikin tawagar 'yan wasan Ireland masu tasowa don gasar cin kofin Tbilisi ta 2015
Ka yi haƙuri. Kafin gasar, Marshall ya kasance wani ɓangare na Ireland XV wanda ya ɗauki Barbarians a Thomond Park. Ya bayyana a matsayin wanda zai maye gurbin Dan Tuohy, amma ya kasance a bangaren da ya yi rashin nasara yayin da aka doke Ireland 22 zuwa 21. Marshall ya fara wasan farko na Tbilisi da Emerging Italiya, ya fito daga benci a wasan na gaba da Uruguay kuma ya fara wasan karshe da Georgia mai masaukin baki yayin da Ireland ta lashe gasar a karon farko.