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Career ratings for: Pedro, Aderito

  Date of rating  

World Rank Rating +/- Age
04/30/1995#2894223575
05/31/1995#2915223475
06/30/1995#2887223775
07/31/1995#2936223575
08/31/1995#3002223475
09/30/1995#2933224369
10/31/1995#2925224569
11/30/1995#2931224469
12/31/1995#2932224769
01/31/1996#3170223766
02/29/1996#3194223766
03/31/1996#3232223466
04/30/1996#2582227968
05/31/1996#2583227968
06/30/1996#2565227868
07/31/1996#2567227868
08/31/1996#2621227768
09/30/1996Inactive223779
10/31/1996Inactive223779
11/30/1996Inactive223679
12/31/1996Inactive224079
01/31/1997#3311222975
02/28/1997#3335222975
03/31/1997#3424222675
04/30/1997Inactive227278
05/31/1997Inactive227078
06/30/1997Inactive227278
07/31/1997Inactive227178
08/31/1997Inactive227078
01/31/1998Inactive221985
02/28/1998Inactive221985
03/31/1998Inactive221885
04/30/1998Inactive226689
05/31/1998Inactive226589
06/30/1998Inactive226689
07/31/1998Inactive226689
08/31/1998Inactive226289

These ratings, calculated for Pedro, Aderito, 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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