Mezue ahịrịokwu na-esonụ: Ristolainen mere NHL mbụ ya na Buffalo Sabres n'abalị mmeghe nke oge 2013-14 n'abalị nke abụọ nke ọnwa Ọktoba afọ 2013, megide Detroit Red Wings. O nwetara ihe mgbaru ọsọ mbụ ya na NHL mgbe e mesịrị n'ọnwa ahụ, na October 25 megide Jacob Markström nke Florida Panthers. Na 5 Jenụwarị 2014, Ristolainen gbara onye meriri oge mgbakwunye na njedebe nke
2014 World Junior Ice Hockey Championships megide Sweden nke a na-emebeghị mbụ, na-enye Finland ọla edo. O nwetara ihe nrite mbụ ya na NHL na 10 Disemba 2015 megide Calgary Flames. N'ime ime nke a, ọ ghọrọ onye mbụ na-agbachitere Sabres ka ọ gbaa ọkpụ atọ kemgbe Hockey Hall of Famer Phil Housley mere ya n'oge 1987/88.