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Career ratings for: Weiss Nowack, Christian

  Date of rating  

World Rank Rating +/- Age
08/31/1988Inactive222079
09/30/1988Inactive222179
10/31/1988#1335220475
11/30/1988#1368220275
12/31/1988#1425220675
01/31/1989Inactive220377
02/28/1989Inactive220277
03/31/1989Inactive220277
04/30/1989Inactive220377
05/31/1989Inactive222079
06/30/1989Inactive221679
07/31/1989Inactive221979
08/31/1989Inactive221983
09/30/1989Inactive222083
10/31/1989Inactive220086
11/30/1989Inactive219886
12/31/1989Inactive220286
01/31/1990Inactive219988
02/28/1990Inactive219788
03/31/1990Inactive219688
04/30/1990Inactive219888

These ratings, calculated for Weiss Nowack, Christian, 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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