Mariusz Trzeciakiewicz plays beach volleyball for Berliner Fußball-Club Preussen and competes in the federation “Volleyball-Verband Berlin”.
Currently listed in Berlin Herren 2026 (rank 602, 5 points). 3 tournament results are documented from 2025. Most recently documented: place 9 at Beachfactory B-Cup (Aug 2, 2025). Most frequent partners in the results: Tom Hersperger (3×).