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Player:  Jan Tuinstra 
KNDB-rating on 1-7-2023: 613
Highest KNDB-rating ever: 636
Average KNDB-rating all time: 611 
Virtual KNDB-rating : 609 Toernooibase Dammen

Strongest win in last 10 years by
Jan Tuinstra (636):
08-01-2019 Henk Mekkes (640)
(Provincial Teamcompetition Friesland)
Toernooibase Dammen Weakest loss in last 10 years by
Jan Tuinstra (603):
16-10-2019 Louis Douma (563)
(Provincial Teamcompetition Friesland)		     
DateTournamentOpponentRatGaPtR.diff.N.percN.pts
tu 17-10-2023  Provincial Teamcompetition Friesland  Sjouke Zijlstra  773 1-0-160 0.29 0.58
 Total:1-00.58
 Correctionfactor:7.5 (34 g.)
 Calculation:0-0.58 x7.5=-4.32
 Virtual rating: 609
 Aver.rating: 693 Perc.:0.25Diff.: -193
 TPR: