← Oberbank Challenger Open 2026 · Round 4Koellner, Ruben Gideon vs Leitgeb, Julian, Round 4, Oberbank Challenger Open 2026IMKoellner, Ruben Gideon2531 · GER½–½FMLeitgeb, Julian2298 · AUT18 Aug, 13:15Board 1 of 20Board 2 →