Together with Astrup, he reached a career high of World number 1 in the men's doubles in December 2024.

[3] In September, Rasmussen and Astrup claimed their first ever BWF World Tour Super 1000 title in the China Open after beating host pair Han Chengkai and Zhou Haodong in the final.

[6] Rasmussen made his debut at the European Games in 2019, where he won the silver medal with and his partner, Astrup.

[11] In 2023, Rasmussen managed to win the gold medal in his second appearance at the European Games with his partner Astrup.

[4] At the BWF World Championships, he and his partner then upgraded the bronze to silver that they won in 2021, after battling the final match in Royal Arena against the rising Korean pair Kang Min-hyuk and Seo Seung-jae which ended in defeat in a close rubber game.