Rasmussen, 19, might stand 6-foot-6 now but some things will never change.
"He still is my little boy and it's surreal to think that he's actually here playing his first NHL game," mom Denise Rasmussen said. "It seems like just yesterday he was learning to skate backwards."
Denise said she and Michael's dad, Paul, were in different cities when Michael texted her the news that he had made the team. But she got his real reaction a while later.
"A couple of hours later when we were able to talk, we Facetimed, and it was full of emotion," Denise said. "It was so sweet that I could see his face, he could see mine. I was thrilled and crying and he shed some tears as well. It was just so wonderful, so special."
As he watched his son play, Paul Rasmussen thought back to all those days back home in Vancouver.
"It's pretty exciting, it's been his dream to play in the NHL from a young boy shooting pucks in the garage to where I had to replace the garage door," Paul said. "He's very determined and a hard-working young man and we're all very proud of him. To be here tonight for the family, it's just really wonderful."
Rasmussen's sisters, Jacqueline and Samantha, were also part of the Rasmussen cheering crowd.
While Denise said she really didn't know that her son was destined to be a professional athlete, Paul had an inkling early on.
"I knew right away since he put on a pair of skates or a pair of soccer boots," Paul said. "Michael's very athletic and anytime he a played a game in a sport like soccer, he was very determined. He always wanted to be the best he could possibly be, and he's done that throughout his childhood and into his teenage years now and that's the reason why he's playing in the NHL now.
"It's just the way he is, it's in him to be the best he can possibly be, not just as a player, but as a person and he gives a lot of credit to us for helping him showing him the way, but at the end of the day, the hard work and effort comes from him."
EHNS MAKE LONG TRIP: While the Cholowskis and Rasmussens traveled quite a way from British Columbia to be in Detroit, they couldn't beat Christoffer Ehn's family.
Ehn's parents, Lars and Ulrica, and his younger sister, Rebecca, flew in from Skara, Sweden to be there for Christoffer's debut.