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Career ratings for: Belliard, Luis

  Date of rating  

World Rank Rating +/- Age
10/31/1970Inactive224981
12/31/1970Inactive224584
02/28/1971Inactive222880
04/30/1971Inactive225476
06/30/1971Inactive224876
08/31/1971Inactive224976
04/30/1972Inactive225587
06/30/1972Inactive224987
08/31/1972Inactive225087
10/31/1972#472229466
12/31/1972#493226868
02/28/1973#547225366
04/30/1973#490228765
06/30/1973#497228465
08/31/1973#500228565
10/31/1973#484228673
12/31/1973#502226174
02/28/1974Inactive224775
04/30/1974#500227874
06/30/1974#533227374
08/31/1974#539227474
10/31/1974Inactive227483
12/31/1974Inactive224885
02/28/1975Inactive224086
04/30/1975Inactive227284
06/30/1975Inactive226784
08/31/1975Inactive226884

These ratings, calculated for Belliard, Luis, 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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