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Player:  Cees Staal 
Age: 80
KNDB-rating on 1-7-2020: 683
Highest KNDB-rating ever: 823
Average KNDB-rating all time: 739 
Virtual KNDB-rating : 687
     .
DateTournamentOpponentRatGaPtR.diff.N.percN.pts
sa 19-09-2020  Dutch Teampcompetition KNDB  Joep Kerkhoff  641 1-242 0.56 1.12
 Total:1-21.12
 Correctionfactor:5 (176 g.)
 Calculation:2-1.12 x5=4.41
 Virtual rating: 687
 Aver.rating: 662 Perc.:0.75Diff.: 193
 TPR:
* TPR adjusted to new calculationrule
* official KNDB-rating can be not the same as virtual rating because of new iRp-check