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Player: Gijs Koelstra Age: 63 KNDB-rating on 1-7-2023: 963 Highest KNDB-rating ever: 987 Average KNDB-rating all time: 954 Virtual KNDB-rating : 0 Strongest win in last 10 years by Gijs Koelstra (987): 07-01-2019 Gerrit Terpstra (1035) (Provincial Teamcompetition Friesland) Gijs Koelstra (984): 04-10-2021 Jan Hoogsteen (819) (Provincial Teamcompetition Friesland) |