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Player:  Gerold Kosman  Age: 46
KNDB-rating on 1-7-2023: 1137
Highest KNDB-rating ever: 1152
Average KNDB-rating all time: 1112 
Virtual KNDB-rating : 1137 Toernooibase Dammen

Strongest win in last 10 years by
Gerold Kosman (1095):
13-12-2014 Karel Leemreize (1121)
(Dutch Teamcompetition KNDB)
Toernooibase Dammen Weakest loss in last 10 years by
Gerold Kosman (1137):
19-03-2024 Jan Bos (994)
(Provincial Teamcompetition Gelderland)

FMJD-rating: 1951
Highest FMJD-rating ever: 1951
Average FMJD-rating all time: 1937
(Graphics FMJD-rating in period
KNDB-rating)		     
DateTournamentOpponentRatGaPtR.diff.N.percN.pts
sa 09-09-2023  Dutch Teamcompetition KNDB  Theo Stoverinck  1090 1-147 0.57 1.13
fr 27-10-2023  Provincial Teamcompetition Gelderland  Cor Langeveld  1103 1-234 0.55 1.1
sa 04-11-2023  Dutch Teamcompetition KNDB  Auke Zijlstra  1152 1-0-15 0.48 0.96
fr 10-11-2023  Provincial Teamcompetition Gelderland  Erwin Jochemsen  982 1-2155 0.71 1.41
th 23-11-2023  Provincial Teamcompetition Gelderland  Fred van Amersfoort  1008 1-1129 0.67 1.35
fr 08-12-2023  Provincial Teamcompetition Gelderland  Herman Arissen  1093 1-144 0.56 1.12
sa 06-01-2024  Dutch Teamcompetition KNDB  Jacco Sandee  1156 1-1-19 0.47 0.95
th 11-01-2024  Provincial Teamcompetition Gelderland  Jakob de Vries  958 1-2179 0.73 1.47
sa 20-01-2024  Dutch Teamcompetition KNDB  Wim Muijs  1090 1-247 0.57 1.13
fr 26-01-2024  Provincial Teamcompetition Gelderland  Theo Schoofs  1118 1-119 0.53 1.05
sa 03-02-2024  Dutch Teamcompetition KNDB  Henk Kleinrensink  1150 1-1-13 0.48 0.96
th 08-02-2024  Provincial Teamcompetition Gelderland  Henk Bracht  878 1-1259 0.82 1.64
fr 23-02-2024  Provincial Teamcompetition Gelderland  Rein Bergsma  1035 1-2102 0.64 1.28
sa 02-03-2024  Dutch Teamcompetition KNDB  Wilrick Wonnink  1133 1-14 0.51 1.01
tu 19-03-2024  Provincial Teamcompetition Gelderland  Jan Bos  994 1-0143 0.69 1.38
 Total:15-1817.94
 Correctionfactor:5 (329 g.)
 Calculation:18-17.94 x5=0.30
 Virtual rating: 1137
 Aver.rating: 1063 Perc.:0.6Diff.: 72
 TPR: 1063 +72 1135