Niittymäki was named to the Team Finland for the 2006 Winter Olympics after Kari Lehtonen and Miikka Kiprusoff had to pull out due to injuries.
Early in the 2005–06 season, the Atlanta Thrashers were in talks with Potvin in hopes of signing him after starting goaltender Kari Lehtonen and backup goaltender Mike Dunham went down with injuries.
His first NHL goal was scored on January 20, 2011 against Kari Lehtonen of the Dallas Stars.
Kari Lehtonen (born 1983), Finnish professional ice hockey goaltender
His first and second NHL goals were scored on October 27, 2011 against Kari Lehtonen of the Dallas Stars.
Kari Matchett | Kari Lehtonen | Kari Byron | James Kari | Kari Dziedzic | Kári | Dagur Kári | Thereza Imanishi-Kari | Pertti Lehtonen | Lila Kari | Kisa-Toverit Helsinki's Kari Liimo against Real Madrid Baloncesto | Kari Wahlgren | Kari Skogland | Kari Simonsen | Kari Nyquist | Kari Kimmel | Kari Garmann | Kari Eloranta | Kari Coleman | kari | Henri Lehtonen |