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Player:  Gerlof Kolk 
Age: 36
KNDB-rating on 1-7-2019: 1380
Highest KNDB-rating ever: 1421
Average KNDB-rating all time: 1351 
Virtual KNDB-rating : 1392

FMJD-rating: 2260
Highest FMJD-rating ever: 2273
Average FMJD-rating all time: 2168

(Graphics FMJD-rating in period
KNDB-rating)
     .
     .
DateTournamentOpponentRatGaPtR.diff.N.percN.pts
sa 05-10-2019  Dutch Teamcompetition KNDB  Ton Bollebakker  1231 1-2149 0.7 1.4
sa 19-10-2019  Dutch Teamcompetition KNDB  Bill Neven  1290 1-290 0.62 1.25
th 24-10-2019  Provincial Teamcompetition PFDB  Piet Bouma  1181 1-2199 0.76 1.51
sa 09-11-2019  Dutch Teamcompetition KNDB  Frank Zwerver  896 1-2484 0.95 1.91
sa 23-11-2019  Dutch Teamcompetition KNDB  Erwin van Hierden  1363 1-017 0.52 1.05
sa 07-12-2019  Dutch Teamcompetition KNDB  Johan Teake Dekker  1343 1-137 0.55 1.1
th 12-12-2019  Provincial Cupcompetition PFDB  Fokke Heidsma  922 1-2458 0.95 1.89
sa 21-12-2019  Dutch Teamcompetition KNDB  Geert Berends  1236 1-1144 0.69 1.39
sa 04-01-2020  Dutch Teamcompetition KNDB  Jakob Pronk  1169 1-2211 0.77 1.54
tu 07-01-2020  Provincial Teamcompetition PFDB  Martin de Vries  763 1-2617 0.98 1.97
we 22-01-2020  Provincial Cupcompetition PFDB  Gabriël Heerema  1397 1-1-17 0.48 0.95
sa 01-02-2020  Dutch Teamcompetition KNDB  Sietse Nagel  1117 1-2263 0.82 1.64
th 06-02-2020  Provincial Teamcompetition PFDB  Gabriël Heerema  1397 1-1-17 0.48 0.95
sa 15-02-2020  Dutch Teamcompetition KNDB  Han Seinhorst  1256 1-2124 0.67 1.34
sa 29-02-2020  Dutch Teamcompetition KNDB  Kees de Jong  1222 1-1158 0.71 1.42
th 12-03-2020  Provincial Cupcompetition PFDB  Anton Schotanus  1279 1-2101 0.64 1.28
 Total:16-2522.58
 Correctionfactor:5 (561 g.)
 Calculation:25-22.58 x5=12.08
 Virtual rating: 1392
 Aver.rating: 1191 Perc.:0.78Diff.: 222
 TPR: 1191 +222 1413
* official KNDB-rating can be not the same as virtual rating because of new iRp-check