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Player:  Jacob Poortinga  Age: 68 KNDB-rating on 1-7-2023: 1065 Highest KNDB-rating ever: 1148 Average KNDB-rating all time: 1096  Virtual KNDB-rating : 0 Strongest win in last 10 years by Jacob Poortinga (1064): 20-09-2014 Wim van der Molen (1075) (Dutch Teamcompetition KNDB) Weakest loss in last 10 years by Jacob Poortinga (1079): 05-10-2015 Sietse Jonker (900) (Provincial Teamcompetition Friesland) FMJD-rating: 1943 Highest FMJD-rating ever: 1943 Average FMJD-rating all time: 1941 (Graphics FMJD-rating in period KNDB-rating)  Highest Historical Toernooibaserating on 01-01-1997:  1106 D

Date	Tournament	Opponent	Rat	Ga		Pt	R.diff.	N.perc	N.pts
		Correctionfactor:		7.5	( g.)
		Calculation:			-	0 x		7.5=	0
		Virtual rating:							0
		Aver.rating:	0	Perc.:			0.5	Diff.:	0
		TPR: