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Player:  Klaas de Vries  Age: 61 KNDB-rating on 1-7-2023: 867 Highest KNDB-rating ever: 886 Average KNDB-rating all time: 848  Virtual KNDB-rating : 858 Strongest win in last 10 years by Klaas de Vries (832): 28-02-2017 Minze Osinga (1029) (Provincial Teamcompetition Friesland) Weakest loss in last 10 years by Klaas de Vries (851): 13-11-2018 Geert Rozenberg (844) (Provincial Teamcompetition Friesland)

Date	Tournament	Opponent	Rat	Ga		Pt	R.diff.	N.perc	N.pts
mo 20-11-2023	Provincial Teamcompetition Friesland	Piet Pieters	1019	1	-	0	-152	0.3	0.59
tu 21-11-2023	Provincial Teamcompetition Friesland	Henk Jonker	1158	1	-	0	-291	0.15	0.31
mo 29-01-2024	Provincial Teamcompetition Friesland	Ruurd Winkel	800	1	-	1	67	0.59	1.19
th 15-02-2024	Provincial Cupcompetition Friesland	Gerlof Kolk	1393	1	-	0	-526	0.03	0.07
tu 20-02-2024	Provincial Teamcompetition Friesland	Rika van Leeuwen	637	1	-	1	230	0.79	1.58
		Total:		5	-	2			3.73
		Correctionfactor:		5	(187 g.)
		Calculation:		2	-	3.73 x		5=	-8.67
		Virtual rating:							858
		Aver.rating:	1001	Perc.:			0.2	Diff.:	-240
		TPR: