Tuhia he haere tonu mo tenei whitianga - I tiimata a Morrisonn i tana umanga hokai me te Vancouver Thunderbird Minor Hockey Association (VTMHA). Whai muri i tana whakaatu i a ia i te taumata hapori, i tohua ia e te Kamloops Blazers o te WHL, a, i muri mai ka tohua ia i te rauna tuatahi, 19th katoa na te Boston Bruins i te 2001 NHL Entry Draft
He aha? I muri mai ka tukuna ia ki nga Capitals i te Poutu-te-rangi 3, 2004 i roto i te tauhokohoko i tukuna a Sergei Gonchar ki nga Bruins.