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Player:  Bertus de Vries  KNDB-rating on 1-7-2023: 906 Highest KNDB-rating ever: 944 Average KNDB-rating all time: 915  Virtual KNDB-rating : 887 Strongest win in last 10 years by Bertus de Vries (899): 07-01-2020 Johan Kleine (1011) (Provincial Teamcompetition Overijssel) Weakest loss in last 10 years by Bertus de Vries (917): 26-11-2018 Reinder Barkema (769) (Provincial Teamcompetition Overijssel)

Date	Tournament	Opponent	Rat	Ga		Pt	R.diff.	N.perc	N.pts
sa 23-09-2023	Dutch Teamcompetition KNDB	Boike Mathoera	1067	1	-	0	-161	0.29	0.57
sa 04-11-2023	Dutch Teamcompetition KNDB	Eit Veenstra	832	1	-	1	74	0.6	1.2
sa 18-11-2023	Dutch Teamcompetition KNDB	Hans van Dijk	992	1	-	0	-86	0.38	0.76
sa 02-12-2023	Dutch Teamcompetition KNDB	Ferdinand de Grijs	710	1	-	0	196	0.75	1.51
mo 11-12-2023	Provincial Teamcompetition Overijssel	Ton Schockman	846	1	-	1	60	0.58	1.17
mo 15-01-2024	Provincial Teamcompetition Overijssel	Paul Borreman	920	1	-	2	-14	0.48	0.96
tu 30-01-2024	Provincial Teamcompetition Overijssel	John Folkers	1011	1	-	0	-105	0.36	0.71
sa 03-02-2024	Dutch Teamcompetition KNDB	Erik Oonk	920	1	-	1	-14	0.48	0.96
tu 27-02-2024	Provincial Teamcompetition Overijssel	Freek Jongerman	920	1	-	1	-14	0.48	0.96
mo 11-03-2024	Provincial Teamcompetition Overijssel	Johan Kleine	999	1	-	1	-93	0.37	0.74
		Total:		10	-	7			9.56
		Correctionfactor:		7.5	(36 g.)
		Calculation:		7	-	9.56 x		7.5=	-19.17
		Virtual rating:							887
		Aver.rating:	922	Perc.:			0.35	Diff.:	-110
		TPR:	922	+	-110				812