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Player:  Roel Boomstra 
Age: 28
KNDB-rating on 1-7-2020: 1560
Highest KNDB-rating ever: 1588
Average KNDB-rating all time: 1480 
Virtual KNDB-rating : 1558

FMJD-rating: 2408
Highest FMJD-rating ever: 2432
Average FMJD-rating all time: 2326

(Graphics FMJD-rating in period
KNDB-rating)
     .
     .
DateTournamentOpponentRatGaPtR.diff.N.percN.pts
sa 19-09-2020  Dutch Teampcompetition KNDB  Toine Brouwers  1429 1-1131 0.68 1.35
th 27-05-2021  Dutch Championship KNDB  Casper Remeijer  1404 1-1156 0.71 1.41
fr 28-05-2021  Dutch Championship KNDB  Henk Grotenhuis ten Harkel  1362 1-2198 0.76 1.51
sa 29-05-2021  Dutch Championship KNDB  Jan Groenendijk  1541 1-119 0.53 1.05
sa 29-05-2021  Dutch Championship KNDB  Ron Heusdens  1461 1-199 0.64 1.27
su 30-05-2021  Dutch Championship KNDB  Anton van Berkel  1429 1-1131 0.68 1.35
mo 31-05-2021  Dutch Championship KNDB  Wouter Sipma  1483 1-177 0.61 1.21
mo 31-05-2021  Dutch Championship KNDB  Alexander Baliakin  1531 1-129 0.54 1.08
tu 01-06-2021  Dutch Championship KNDB  Andrew Tjon A Ong  1325 1-2235 0.79 1.59
we 02-06-2021  Dutch Championship KNDB  Martijn van IJzendoorn  1537 1-123 0.53 1.06
th 03-06-2021  Dutch Championship KNDB  Bhiem Ramdien  1394 1-2166 0.72 1.44
th 03-06-2021  Dutch Championship KNDB  Jan van Dijk  1403 1-1157 0.71 1.42
fr 04-06-2021  Dutch Championship KNDB  Bart Terwel  1376 1-2184 0.74 1.48
sa 05-06-2021  Dutch Championship KNDB  Jitse Slump  1489 1-171 0.6 1.2
 Total:14-1818.44
 Correctionfactor:5 (799 g.)
 Calculation:18-18.44 x5=-2.18
 Virtual rating: 1558
 Aver.rating: 1440 Perc.:0.64Diff.: 105
 TPR: 1440 +105 1545
* official KNDB-rating can be not the same as virtual rating because of new iRp-check