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Career ratings for: Klein, J.

  Date of rating  

World Rank Rating +/- Age
07/31/1996#4387211575
08/31/1996#4416211875
09/30/1996#4497211975
10/31/1996#4517211275
11/30/1996#4578210171
12/31/1996#4609210371
01/31/1997#4476212573
02/28/1997#4504212473
03/31/1997#4551212373
04/30/1997#4577212373
05/31/1997#4609212273
06/30/1997#4608212273
07/31/1997Inactive211277
08/31/1997Inactive211277
09/30/1997Inactive211177
10/31/1997Inactive210977
11/30/1997Inactive209581
12/31/1997Inactive209681
01/31/1998Inactive211683
02/28/1998Inactive211583
03/31/1998Inactive211683
04/30/1998Inactive211783
05/31/1998Inactive211683
06/30/1998Inactive211483
07/31/1998Inactive210488
08/31/1998Inactive210488
09/30/1998Inactive210588
10/31/1998Inactive210488

These ratings, calculated for Klein, J., 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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