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Player:  Gery van Oosterom-Sieswerda  Age: 58
KNDB-rating on 1-7-2023: 0
Highest KNDB-rating ever: 0
Average KNDB-rating all time: 383 
Virtual KNDB-rating : 383 Toernooibase Dammen Toernooibase Dammen 		     
DateTournamentOpponentRatGaPtR.diff.N.percN.pts
sa 09-09-2023  Dutch Teamcompetition KNDB  Gwen Scholten  693 1-0-310 0.14 0.28
sa 23-09-2023  Dutch Teamcompetition KNDB  André Haijtink  847 1-0-464 0.05 0.1
sa 14-10-2023  Dutch Teamcompetition KNDB  Bernard Renting  891 1-0-508 0.04 0.08
sa 04-11-2023  Dutch Teamcompetition KNDB  Fienne Martens  763 1-1-380 0.09 0.18
sa 18-11-2023  Dutch Teamcompetition KNDB  Silas Schuitemaker  857 1-0-474 0.05 0.1
sa 02-12-2023  Dutch Teamcompetition KNDB  Jelte Evers  656 1-0-273 0.17 0.34
sa 06-01-2024  Dutch Teamcompetition KNDB  Gerrit Klaseboer  996 1-0-613 0.02 0.03
sa 20-01-2024  Dutch Teamcompetition KNDB  Jan Luiten  814 1-0-431 0.07 0.13
sa 03-02-2024  Dutch Teamcompetition KNDB  Hilco Braakman   1047 1-0-664 0.01 0.02
sa 17-02-2024  Dutch Teamcompetition KNDB  Bouke van der Werff  901 1-0-518 0.04 0.07
sa 02-03-2024  Dutch Teamcompetition KNDB  Jan van Buiten  1070 1-0-687 0.01 0.02
 Total:11-11.35
 Correctionfactor:7.5 (11 g.)
 Calculation:
 Tot. aver. o-rating (incl. earl. seas.): 867Perc.: 0.05
 Tot. points (incl. earl. seas.): 11 - 1Diff.: -484
 Virtual rating: 867 +-484 383
 Aver.rating: 867 Perc.:0.05Diff.: -484
 TPR: 867 +-484 383