Compare

Jaco Koster

USA · K=40 · Peak 2128 (By Jan 2001)

Best performance: 2006 at OP XXXVII Coppa Citta' di Cagliari(Best of 2012)

NOV26 Rating

2074

Live Rating

2074.0

Change

0.0

Games Played

0

How live ratings are calculated

Rating History · Classical

Loading chart…
Official classical rating by month
ListRatingChange
Nov 202620740
Oct 202620740
Sep 202620740
Aug 202620740
Jul 202620740
Jun 202620740
May 202620740
Apr 202620740
Mar 202620740
Feb 202620740
Jan 202620740
Dec 202520740

Form · Classical

Form shows from 10 games. 9 classical games are on record so far.

Classical games since the November list

No rated standard games this rating periodsince the NOV26 list (Nov 1, 2026)

Last playedScore
OP XXXVII Coppa Citta' di CagliariSep 17, 2012TPR 20064½/9

The live rating moves only when new rated games are played. Until then it matches the published rating.

Best wins · Classical

From 7 rated classical games against rated opponents, 2012

#OpponentRating
1Gianvito Murtas, OP XXXVII Coppa Citta' di Cagliari, Sep 2012, 1730

Event timeline · Classical

1 event

Events before the current rating period show the performance, not a rating change.

Live events show the rating change; earlier events show the performance rating.

Performance rating by year

YearGamesScoreAvg oppTPR
20127320562006

Games count in the month they were played. Each month and year is one performance rating over all of its rated games.

Live ratings projected from the NOV26 published list · Not affiliated with FIDE