To say Rasmussen got his NHL career off to a good start might be an understatement. Called up to the Chicago Blackhawks from Rockford of the American Hockey League after Marcus Kruger was injured, Rasmussen scored on his first shot in his NHL debut Dec. 8, 2015, against Pekka Rinne of the Nashville Predators.
He had three goals and an assist in his first seven NHL games, all of his points coming in Blackhawks victories. Rasmussen's fourth and final goal of the season was a game-winner Feb. 28, 2016, against the Washington Capitals. He finished his rookie season with nine points in 44 games.