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Player:  Jack Sijbers  Age: 55
KNDB-rating on 1-7-2023: 787
Highest KNDB-rating ever: 885
Average KNDB-rating all time: 837 
Virtual KNDB-rating : 788 Toernooibase Dammen

Strongest win in last 10 years by
Jack Sijbers (833):
03-10-2015 Raymond Vandecaetsbeek (884)
(Dutch Teamcompetition KNDB)
Toernooibase Dammen Weakest loss in last 10 years by
Jack Sijbers (841):
05-11-2016 André Raven (671)
(Provincial Teamcompetition Limburg)

FMJD-rating: 1925
Highest FMJD-rating ever: 0
Average FMJD-rating all time: 1922
(Graphics FMJD-rating in period
KNDB-rating)		     
DateTournamentOpponentRatGaPtR.diff.N.percN.pts
sa 23-09-2023  Dutch Teamcompetition KNDB  Henk van der Heijden  700 1-287 0.62 1.24
sa 03-02-2024  Dutch Teamcompetition KNDB  Herman Lamberts  829 1-2-42 0.44 0.88
sa 17-02-2024  Dutch Teamcompetition KNDB  Hans Loots  865 1-0-78 0.39 0.78
sa 02-03-2024  Dutch Teamcompetition KNDB  Marjory Feyt  826 1-0-39 0.45 0.89
sa 06-04-2024  Provincial Teamcompetition Limburg  Wiel Maertzdorf  1157 1-0-370 0.1 0.2
sa 04-05-2024  Provincial Teamcompetition Limburg  Jo Hollands  604 1-2183 0.74 1.48
sa 18-05-2024  Provincial Teamcompetition Limburg  Dré Verheggen  956 1-0-169 0.28 0.55
sa 29-06-2024  Provincial Teamcompetition Limburg  Jan Schoenmakers  849 1-1-62 0.41 0.83
 Total:8-76.85
 Correctionfactor:7.5 (120 g.)
 Calculation:7-6.85 x7.5=1.1
 Virtual rating: 788
 Aver.rating: 848 Perc.:0.44Diff.: -45
 TPR: