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Player:  Ko Heikoop  Age: 66 KNDB-rating on 1-7-2023: 825 Highest KNDB-rating ever: 944 Average KNDB-rating all time: 860  Virtual KNDB-rating : 844 Strongest win in last 10 years by Ko Heikoop (827): 12-10-2015 Aart de Bruin (962) (Provincial Teamcompetition Z-Holland Zuid) Weakest loss in last 10 years by Ko Heikoop (856): 06-01-2020 Johan Stuij (710) (Cup Z-Holland Zuid)

Date	Tournament	Opponent	Rat	Ga		Pt	R.diff.	N.perc	N.pts
tu 03-10-2023	Provincial Teamcompetition Z-Holland Zuid	Jan Vorthoren	674	1	-	1	151	0.7	1.4
tu 10-10-2023	Provincial Teamcompetition Z-Holland Zuid	Bas Piepers	811	1	-	2	14	0.52	1.04
mo 30-10-2023	Provincial Teamcompetition Z-Holland Zuid	Jan Pellekaan	872	1	-	1	-47	0.43	0.87
tu 21-11-2023	Provincial Teamcompetition Z-Holland Zuid	Adrie Roest	968	1	-	1	-143	0.31	0.62
mo 11-12-2023	Provincial Teamcompetition Z-Holland Zuid	Wim IJsselstein	836	1	-	2	-11	0.48	0.97
tu 09-01-2024	Cupcompetition Z-Holland Zuid	Wim Bakker	888	1	-	0	-63	0.41	0.83
tu 30-01-2024	Provincial Teamcompetition Z-Holland Zuid	Ad de Hek	1131	1	-	1	-306	0.14	0.28
mo 15-04-2024	Provincial Teamcompetition Z-Holland Zuid	Cees van Zuijdam	879	1	-	2	-54	0.43	0.85
tu 07-05-2024	Provincial Teamcompetition Z-Holland Zuid	Piet van Essen	606	1	-	1	219	0.78	1.56
		Total:		9	-	11			8.41
		Correctionfactor:		7.5	(116 g.)
		Calculation:		11	-	8.41 x		7.5=	19.4
		Virtual rating:							844
		Aver.rating:	852	Perc.:			0.61	Diff.:	81
		TPR: