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Player: Dirk Albert Zijlstra Age: 49
KNDB-rating on 1-7-2023: 1138
Highest KNDB-rating ever: 1138
Average KNDB-rating all time: 1040
Virtual KNDB-rating : 1140 Toernooibase Dammen

Strongest win in last 10 years by
Dirk Albert Zijlstra (1107):
15-10-2016 Gabriël Heerema (1391)
(Dutch Teamcompetition KNDB)
Toernooibase Dammen Weakest loss in last 10 years by
Dirk Albert Zijlstra (1107):
31-10-2016 Anton van der Ploeg (933)
(Provincial Teamcompetition Friesland)

FMJD-rating: 2068
Highest FMJD-rating ever: 2107
Average FMJD-rating all time: 2078
_{(Graphics FMJD-rating in period
KNDB-rating)}

Date	Tournament	Opponent	Rat	Ga		Pt	R.diff.	N.perc	N.pts
sa 09-09-2023	Dutch Teamcompetition KNDB	IJsbrand Haven	1190	1	-	0	-52	0.43	0.86
sa 23-09-2023	Dutch Teamcompetition KNDB	Jappie de Vries	1179	1	-	1	-41	0.44	0.89
sa 14-10-2023	Dutch Teamcompetition KNDB	Fokke Smid	923	1	-	2	215	0.77	1.55
th 19-10-2023	Provincial Teamcompetition Friesland	Jan Algra	1261	1	-	2	-123	0.33	0.67
sa 04-11-2023	Dutch Teamcompetition KNDB	Frank ten Hagen	1065	1	-	1	73	0.6	1.2
sa 18-11-2023	Dutch Teamcompetition KNDB	Erik Bakker	1071	1	-	1	67	0.59	1.19
mo 20-11-2023	Provincial Teamcompetition Friesland	Jan Dantuma	979	1	-	2	159	0.71	1.42
sa 06-01-2024	Dutch Teamcompetition KNDB	Michiel Hagreis	1058	1	-	1	80	0.61	1.22
we 10-01-2024	Provincial Teamcompetition Friesland	Gabriël Heerema	1405	1	-	0	-267	0.18	0.35
sa 20-01-2024	Dutch Teamcompetition KNDB	Hans Luchies	914	1	-	1	224	0.78	1.57
tu 30-01-2024	Provincial Teamcompetition Friesland	Sietse Nagel	1112	1	-	2	26	0.54	1.07
sa 03-02-2024	Dutch Teamcompetition KNDB	Jan Dekker	906	1	-	1	232	0.79	1.58
th 15-02-2024	Provincial Cupcompetition Friesland	Hans Zondervan	1253	1	-	1	-115	0.34	0.69
sa 17-02-2024	Dutch Teamcompetition KNDB	Teun van Gelder	1050	1	-	1	88	0.62	1.24
tu 20-02-2024	Provincial Teamcompetition Friesland	Henk Hosper	1104	1	-	1	34	0.55	1.1
sa 02-03-2024	Dutch Teamcompetition KNDB	Raphaël Zdoroviak	1145	1	-	1	-7	0.49	0.98
		Total:		16	-	18			17.56
		Correctionfactor:		5	(225 g.)
		Calculation:		18	-	17.56 x		5=	2.18
		Virtual rating:							1140
		Aver.rating:	1101	Perc.:			0.56	Diff.:	45
		TPR:	1101	+	45				1146