ˈæftɚɹ ɐ sˈɑːlɪd sˈiːzən ɪnwˌɪtʃ hiː plˈeɪd twˈɛnti tˈuː ɡˈeɪmz ænd skˈoːɹd sˈɛvən tɹˈaɪz, kˈuːpɚɹ ˈɜːnd hɪz fˈɜːst sˈiːnjɚ ɹˌɛpɹᵻzˈɛntətˌɪv dʒˈɜːsi wɛn hiː wʌz sᵻlˈɛktᵻd tə plˈeɪ ɐlˈɔŋsaɪd tˈiːmeɪt dʒˈeɪmz tˈæmuː fɚðə pɹˈaɪm mˈɪnɪstɚz ɹˌoʊmən θˈɜːtiːn ɪn ðɛɹ ˈænjuːəl mˈætʃ ɐɡˈɛnst pˈæpjuːə nˈuː ɡˈɪni.
After a solid season in which he played 22 games and scored 7 tries, Cooper earned his first senior representative jersey when he was selected to play alongside teammate James Tamou for the Prime Minister's XIII in their annual match against Papua New Guinea.