ɪn ɹˈaʊnd tˈuː ʌvðə tˈuː θˈaʊzənd sˈɪks ˌɛnˌɑːɹɹˈɛl sˈiːzən, kˈuːpɚ mˌeɪd hɪz ˌɛnˌɑːɹɹˈɛl deɪbjˈuː fɚðə kˈaʊbɔɪz ɪn ðɛɹ twˈɛnti sˈɪkstiːn vˈɪktɚɹi ˌoʊvɚ ðə mˈænli sˈiː ˈiːɡəlz.
In Round 2 of the 2006 NRL season, Cooper made his NRL debut for the Cowboys in their 20–16 victory over the Manly Sea Eagles.