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Player:  Harm Wiersma 
Age: 66
KNDB-rating on 1-7-2019: 1540
Highest KNDB-rating ever: 1612
Average KNDB-rating all time: 1536 
Virtual KNDB-rating : 1538

FMJD-rating: 2402
Highest FMJD-rating ever: 2430
Average FMJD-rating all time: 2385

(Graphics FMJD-rating in period
KNDB-rating)
     .
     .
DateTournamentOpponentRatGaPtR.diff.N.percN.pts
sa 05-10-2019  Dutch Teamcompetition KNDB  Macodou N`Diaye  1492 1-148 0.57 1.13
sa 19-10-2019  Dutch Teamcompetition KNDB  Alexander Shvartsman  1540 1-10 0.5 1
sa 09-11-2019  Dutch Teamcompetition KNDB  Fred de Koning  1364 1-1176 0.73 1.46
sa 23-11-2019  Dutch Teamcompetition KNDB  Erik Hoogendoorn  1266 1-2274 0.83 1.66
sa 07-12-2019  Dutch Teamcompetition KNDB  Martijn Vissers  1360 1-2180 0.74 1.47
sa 21-12-2019  Dutch Teamcompetition KNDB  Odin Mol  1442 1-198 0.63 1.27
sa 04-01-2020  Dutch Teamcompetition KNDB  Bart Terwel  1371 1-1169 0.72 1.45
sa 18-01-2020  Dutch Teamcompetition KNDB  Anatoli Gantvarg  1524 1-116 0.52 1.04
 Total:8-1010.49
 Correctionfactor:5 (455 g.)
 Calculation:10-10.49 x5=-2.44
 Virtual rating: 1538
 Aver.rating: 1420 Perc.:0.63Diff.: 91
 TPR:
* official KNDB-rating can be not the same as virtual rating because of new iRp-check