In February 2017, Beerdsen's IM title was approved during the 9th Batavia Chess Tournament.

[3] In 2020, Beerdsen won the OSBO speed chess tournament, defending his title.

[4] In January 2023, Beerdsen obtained a GM norm at the Tata Steel Chess Tournament.

[6][7][8] In May 2023, Beerdsen won the Limburg Open Chess Tournament after winning the 7-player tiebreak based on Sonneborn–Berger score.

[9][10] In June 2023, Beerdsen officially met all of the requirements to become a Grandmaster.