ɪn ɹˈaʊnd sˈɪkstiːn ʌvðə tˈuː θˈaʊzənd sˈɛvəntˌiːn ˌɛnˌɑːɹɹˈɛl sˈiːzən, kˈuːpɚ kˈæptɪnd ðə kˈaʊbɔɪz ɪn hɪz tˈuːhˈʌndɹɪd fˈɪftiəθ ˌɛnˌɑːɹɹˈɛl ɡˈeɪm, ɪnwˌɪtʃ ðeɪ dᵻfˈiːɾᵻd ðə pɛnɹˈɪθ pˈænθɚz fˈoːɹtiːn twˈɛlv.
In Round 16 of the 2017 NRL season, Cooper captained the Cowboys in his 250th NRL game, in which they defeated the Penrith Panthers 14–12.