In July 2021, Seidel competed at the 2020 Summer Olympics in the men's doubles partnered with Mark Lamsfuß, but he was eliminated in the group stage.[4]
The BWF World Tour, which was announced on 19 March 2017 and implemented in 2018,[5] is a series of elite badminton tournaments sanctioned by the Badminton World Federation (BWF). The BWF World Tour is divided into levels of World Tour Finals, Super 1000, Super 750, Super 500, Super 300 (part of the HSBC World Tour), and the BWF Tour Super 100.[6]
^Raftery, Alan (4 May 2021). "EBC21 Summary". Badminton Europe. Archived from the original on 5 May 2021. Retrieved 5 May 2021.
^"Seidel Marvin". Tokyo Organising Committee of the Olympic and Paralympic Games. Archived from the original on 6 August 2021. Retrieved 10 August 2021.
^Sukumar, Dev (10 January 2018). "Action-Packed Season Ahead!". Badminton World Federation. Archived from the original on 13 January 2018. Retrieved 15 January 2018.