Whakakihia te rerenga e whai ake nei: Ko Niittymäki te whiringa 6 o te Philadelphia Flyers (168th overall) i te
Ko te 1998 NHL Entry Draft. "Kāore anō au kia mōhio i whakauruhia ahau. I kitea e ahau i te ata i muri mai. I tino miharo ahau", i kii ia i roto i tetahi uiui i te marama o Noema 2003. Ahakoa kua whiriwhiria e ia te haere tonu ki te United States ki te takaro i te hockey, ko te mahi hoia whakahau i pupuri a Niittymäki i Finland tae noa ki te Hanuere 2001. Ka hoki mai ia ki TPS i te tau 2012 mo tana wa whakamutunga, ka takaro i nga keemu 14.