Whakaotihia te rerenga e whai ake nei: I timata a Ristolainen i tana NHL ki te Buffalo Sabres i te po whakatuwhera o te waa 2013-14, i te 2 o Oketopa 2013, ki te Detroit Red Wings. I eke ia i tana whaainga NHL tuatahi i muri mai i te marama, i te Oketopa 25 ki a Jacob Markström o nga Florida Panthers. I te 5 o Hanuere 2014, i eke a Ristolainen i te toa i te waa roa i te whakamutunga o te
2014 World Junior Ice Hockey Championships ki a Sweden kaore i hinga i mua, i whakawhiwhia ki a Finland te mētara koura. I eke ia i tana kapa NHL tuatahi i te 10 o Tihema 2015 ki te Calgary Flames. I tenei wa, ko ia te kaitiaki tuatahi o Sabres i eke ki te hat-trick mai i te Hockey Hall of Famer a Phil Housley i mahi i te tau 1987/88.