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Career ratings for: Foygel, Igor

  Date of rating  

World Rank Rating +/- Age
01/31/1980#468236969
02/29/1980#396238972
03/31/1980#402238972
04/30/1980#401239072
05/31/1980#404239172
06/30/1980#407239272
07/31/1980#411239372
08/31/1980#397239272
09/30/1980#401239272
10/31/1980#422238672
11/30/1980#426238672
12/31/1980#423238572
01/31/1981Inactive236379
02/28/1981Inactive238082
03/31/1981Inactive237982
04/30/1981Inactive237882
05/31/1981Inactive237882
06/30/1981Inactive238082
07/31/1981Inactive237982
08/31/1981Inactive237982
09/30/1981Inactive237882
10/31/1981Inactive237382
11/30/1981Inactive237482
12/31/1981Inactive237682
11/30/1989#785239067
12/31/1989#1016235666
01/31/1990#1076235266
02/28/1990#1055235366
03/31/1990#1060235366
04/30/1990#1076235066
05/31/1990#1088234566
06/30/1990#1105234566
07/31/1990#1102234566
08/31/1990#1117234766
09/30/1990#1126234766
10/31/1990#1114234866
11/30/1990Inactive238177
12/31/1990#1148234575
01/31/1991#1174234275
02/28/1991#1174234475
03/31/1991#846239465
04/30/1991#845239465
05/31/1991#855239465
06/30/1991#874239265
07/31/1991#896239265
08/31/1991#896239465
09/30/1991#890239465
10/31/1991#882239565
11/30/1991#640243168
12/31/1991#861239868
01/31/1992#876239868
02/29/1992#864240168
03/31/1992#927239274
04/30/1992#942238774
05/31/1992#966238674
06/30/1992#982238374
07/31/1992#978238574
08/31/1992#993238574
09/30/1992#995238674
10/31/1992#986239074
11/30/1992Inactive242578
12/31/1992Inactive239578
01/31/1993Inactive239278
02/28/1993Inactive239578
03/31/1993Inactive238684
04/30/1993Inactive238484
05/31/1993Inactive238184
06/30/1993Inactive238084
07/31/1993Inactive237984
08/31/1993Inactive237884
09/30/1993Inactive237984
10/31/1993Inactive238284
11/30/1993Inactive242089
12/31/1993Inactive238789
01/31/1994Inactive238589
02/28/1994Inactive238889

These ratings, calculated for Foygel, Igor, incorporate all games (against rated opponents) played in the year before the "Date of rating", along with the ratings that were already calculated one year previously. If a player has an insufficient number of games in recent years, there may be gaps in the list, even though you may see ratings listed on previous and/or subsequent dates. Whenever a player has played no rated games for three straight years, or dies, they are removed from the list.

Definition of columns in the above list:

Date of rating is the "effective date" of the rating. The rating calculation does not include any games occurring after the "Date of rating".

World Rank refers to the player's world rank on that date.

Rating is the calculated rating for the player, as of the "Date of Rating". This represents the player's estimated strength on the following day.

+/- is the standard deviation of the player's rating estimate. It is based on a geometric average of the number of rated games played in past years. Players who play very frequently will have a smaller +/- value, indicating a greater confidence in the accuracy of their rating. Players whose +/- value exceeds 76 are classified as "Inactive" due to their infrequent play against rated opponents. Mathematically, a player's rating is an estimate of their exact strength on the day after the "Date of Rating". The +/- value represents the standard deviation of that estimate; the player's true strength on that date should be within one standard deviation of their calculated rating approximately 68% of the time, and within two standard deviations of their calculated rating approximately 95% of the time.

Age is the player's exact age in years, on the "Date of Rating". If a player's age is displayed as a link, that means that this rating was active at the time of their next birthday. Click on the link to see the sorted list of all players' ratings on their birthdays when turning that same age.

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