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Koellner Ruben Gideon scored 7.5/9 from 9 scored games (6 wins, 3 draws, 0 losses). The average listed opponent rating was 2368.","links":{"profile":"https://www.p-gengler.com/chess/en/players/koellner-ruben-gideon-ger-5","seasonPage":"https://www.p-gengler.com/chess/en/players/koellner-ruben-gideon-ger-5/seasons/2025-2026","json":"https://www.p-gengler.com/chess/api/players/koellner-ruben-gideon-ger-5/seasons/2025-2026","search":"https://www.p-gengler.com/chess/api/search?q=Koellner%20Ruben%20Gideon"}}