Miettinen was drafted by Kyle Dubas, the general manager for the Leafs at the time, he was picked 168th overall. Miettinen has spent the last four season playing for the St. Cloud Huskies. Throughout his 146 games played with the Huskies, he scored 118 points. He also managed the impressive feat of not receiving a single penalty minute throughout the four seasons.
In a recent Instagram post, Miettinen shared that he was thankful to St. Cloud and their fans, he also shared his intentions to continue pursuing a professional career.
A recent report has revealed that although Miettinen was drafted by the Leafs, he will not be signing with them, instead, he will become a free agent on August 15.
Fans have speculated that the reason Miettinen has changed his mind about the Leafs is most likely due to the change in general managers. Kyle Dubas drafted him, Dubas preferred undersized forwards, while the Leafs' current general manager, Brad Treliving, prefers physically larger players. Miettinen is known for his impressive skills, but not for his height or weight, which would not impress Treliving.