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Career ratings for: Palmer, Bernard

  Date of rating  

World Rank Rating +/- Age
10/31/1972#583215869
12/31/1972#569215469
02/28/1973#623215769
04/30/1973#603216269
06/30/1973#607216469
08/31/1973#614216269
10/31/1973Inactive215479
12/31/1973Inactive214979
02/28/1974Inactive215079
04/30/1974Inactive215379
06/30/1974#637215973
08/31/1974#643216073
10/31/1974Inactive215279
12/31/1974Inactive214879
02/28/1975#631215675
04/30/1975#625215975
06/30/1975Inactive215583
08/31/1975Inactive215483
02/29/1976Inactive215186
04/30/1976Inactive215286

These ratings, calculated for Palmer, Bernard, 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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