Sydney Kießling plays beach volleyball for Schmalkalder Volleyballverein and competes in the federation “Thüringer Volleyball-Verband”.
Currently listed in TVV ewige Jugendrangliste m 2026 (rank 2, 209 points); TVV Jugend Männer 2026 (rank 6, 161 points); TVV Erwachsene Männer 2026 (rank 69, 32 points). 14 tournament results are documented since 2023, most of them in 2026 (9). Sydney has achieved 4 podium finishes, including 1 gold, 3 silvers. Most recently documented: place 1 at tvv_jugend (May 31, 2026). Most frequent partners in the results: Nikola Dimitrov (5×), Julius Oskar Eff.