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Career ratings for: Donrault, Patrick

  Date of rating  

World Rank Rating +/- Age
01/31/1994#2922220172
02/28/1994#2761222674
03/31/1994#2630224175
04/30/1994#2802222274
05/31/1994#2807222674
06/30/1994#2818222574
07/31/1994#2809222874
08/31/1994#2877222474
09/30/1994#2890222374
10/31/1994#3018220675
11/30/1994#3103220475
12/31/1994#2941222275
01/31/1995Inactive221478
02/28/1995Inactive223580
03/31/1995Inactive224981
04/30/1995Inactive223380
05/31/1995Inactive223480
06/30/1995Inactive223480
07/31/1995Inactive223680
08/31/1995Inactive223580
09/30/1995Inactive223480
10/31/1995Inactive222380
11/30/1995Inactive221880
12/31/1995Inactive223680
01/31/1996Inactive221489

These ratings, calculated for Donrault, Patrick, 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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