Anders Antonsen swiftly established himself as a prominent figure in international badminton after making his international debut at the 2013 Forza Denmark International tournament. He quickly rose through the ranks, earning the gold medal at the European Junior Championships in boys’ singles in 2015 and being recognized as the European Young Player of the Year. This early success continued with victories at the Dutch International, Belgian International, and Irish Open, all in the same year. Antonsen’s momentum carried into 2016, where he secured his first Grand Prix win at the Scottish Open Grand Prix, alongside titles at the Spanish International, Austrian Open, and Swedish Master.
He concluded 2024 with a career-high World No. 2 ranking and as the runner-up at the BWF World Tour Finals. Kicking off 2025, Antonsen reached the finals of both the Malaysia Open and Thailand Open, and notably repeated his 2019 success by winning the Indonesia Open again, alongside securing a bronze medal at the World Championships.