While Hakkarainen never did crack an NHL lineup, he did bounce around between the ECHL and AHL between 2019-2021.
Hakkarainen was the piece that went back to the Vegas Golden Knights last summer in exchange for Marc-Andre Fleury. He did not play in any games unfortunately though, and went back to play in Europe.
Hakkarainen was unable to play this season and now we know why. It has now been announced that his hockey career is over.
According to sources the 24-year-old has been diagnosed with congenital heart disease.