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Player:  Jacob Folkertsma  Age: 52
KNDB-rating on 1-7-2023: 846
Highest KNDB-rating ever: 859
Average KNDB-rating all time: 832 
Virtual KNDB-rating : 846 Toernooibase Dammen

Strongest win in last 10 years by
Jacob Folkertsma (845):
24-11-2014 Erik Oppedijk (1001)
(Provincial Teamcompetition Friesland)
Toernooibase Dammen Weakest loss in last 10 years by
Jacob Folkertsma (845):
15-01-2015 Atze Freerk Samplonius (801)
(Provincial Teamcompetition Friesland)		     
DateTournamentOpponentRatGaPtR.diff.N.percN.pts
th 02-11-2023  Provincial Teamcompetition Friesland  Gerard Kroese  915 1-1-69 0.4 0.81
mo 20-11-2023  Provincial Teamcompetition Friesland  Hans Poepjes  1024 1-1-178 0.27 0.53
fr 02-02-2024  Provincial Teamcompetition Friesland  Jan Peters  952 1-0-106 0.36 0.71
 Total:3-22.05
 Correctionfactor:7.5 (102 g.)
 Calculation:2-2.05 x7.5=-0.4
 Virtual rating: 846
 Aver.rating: 964 Perc.:0.33Diff.: -123
 TPR: