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Player:  Jelle Jongsma  Age: 61
KNDB-rating on 1-7-2023: 938
Highest KNDB-rating ever: 948
Average KNDB-rating all time: 898 
Virtual KNDB-rating : 945 Toernooibase Dammen

Strongest win in last 10 years by
Jelle Jongsma (894):
26-05-2014 Klaas Veldstra (1084)
(Summertournament Friesland)
Toernooibase Dammen Weakest loss in last 10 years by
Jelle Jongsma (948):
04-03-2017 Marco de Leeuw (873)
(Dutch Teamcompetition KNDB)

FMJD-rating: 1942
Highest FMJD-rating ever: 1971
Average FMJD-rating all time: 1967
(Graphics FMJD-rating in period
KNDB-rating)		     
DateTournamentOpponentRatGaPtR.diff.N.percN.pts
sa 09-09-2023  Dutch Teamcompetition KNDB  Alexandra Betting  921 1-217 0.52 1.05
sa 14-10-2023  Dutch Teamcompetition KNDB  Wout Mensink  1026 1-1-88 0.38 0.76
fr 20-10-2023  Provincial Teamcompetition Friesland  Auke Koopmans  930 1-18 0.51 1.02
sa 04-11-2023  Dutch Teamcompetition KNDB  Tom Knapen  1111 1-0-173 0.27 0.54
sa 18-11-2023  Dutch Teamcompetition KNDB  Allard van Tongeren  905 1-233 0.55 1.09
sa 02-12-2023  Dutch Teamcompetition KNDB  Nick Bolks  847 1-191 0.62 1.25
sa 06-01-2024  Dutch Teamcompetition KNDB  Gerrit Alink  887 1-151 0.57 1.14
sa 03-02-2024  Dutch Teamcompetition KNDB  Jan Rensink  940 1-1-2 0.5 0.99
fr 16-02-2024  Provincial Cupcompetition Friesland  Auke Koopmans  930 1-28 0.51 1.02
sa 02-03-2024  Dutch Teamcompetition KNDB  Hilco Braakman   1047 1-0-109 0.35 0.7
 Total:10-119.58
 Correctionfactor:5 (315 g.)
 Calculation:11-9.58 x5=7.12
 Virtual rating: 945
 Aver.rating: 954 Perc.:0.55Diff.: 35
 TPR: 954 +35 989