Baetens took part in the first international tournaments shortly after he start playing darts. He advanced to the quarter-finals at the Antwerp Open during 2015 edition. In 2016, he advanced to the quarter-finals of the Polish Open. With his final victory over Darryl Fitton at the Czech Open in 2016, Baetens was able to win his first major title before he finally made his breakthrough on the tour in 2017.
In April 2022, he played at the 2022 WDF World Darts Championship. In the first round he beat Dave Parletti by 3–1 in sets. In the second round he beat Scott Marsh. His average for the match of 102.79 was the third highest in the history at the Lakeside Country Club.[2] In the quarter-finals he played against Thibault Tricole and finally lost by 3–4 in sets.
At the end of September, Baetens qualified for the 2022 Belgian Darts Open via the Host Nation Qualifier. There he lost in the first round match against Madars Razma. After few weeks, Baetens won a title at the Bruges Open. In November 2022, he won Czech Open for the third time. In the final duel against Antony Allen, he beat him by 5–0 in legs. He qualified for the 2022 Winmau World Masters, where he reached the fourth round, and for the 2023 WDF World Darts Championship. At the World Championship he defeated Sebastian Bialecki, Gary Stone and Jonny Tata to the reach his first world championship semifinal, the first for a Belgian at the Lakesidd. He then beat Dennis Nilsson to become the first Belgian in a world darts championship final. In the final he beat Chris Landman to win his first world title. In the period from May 2023 to January 2024, he was the leader of the World Darts Federation men's ranking. He is the third Belgian in history to finish the year in first place in this ranking, after Leo Laurens and Brian Raman.
In January 2024, Baetens entered the PDC European Q-School, earning an automatic two-year tour card following victory in the final on day three of the second stage.[3]
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