Kammala jumla mai zuwa: McCloskey ya sami kiransa na farko zuwa babban jami'in 'yan wasan Ireland daga kocin Joe Schmidt don
Gasar Kasashe shida ta 2016. A ranar 27 ga Fabrairun 2016 an hada shi a cikin Ireland yana farawa 15 a karo na farko a cikin rashin nasara 21-10 a kan Ingila a Twickenham. Dole ne McCloskey ya jira har zuwa 18 ga Nuwamba 2017 don kiran sa na gaba zuwa ƙungiyar Irish. An zaɓe shi don gwaji na biyu a kan Fiji a cikin tsakiyar tsakiyar, kuma ya buga cikakken minti 80 a cikin nasara 23-20.