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Career ratings for: Rivero, J.

  Date of rating  

World Rank Rating +/- Age
01/31/1993#2859214673
02/28/1993#2849214773
03/31/1993#2848214773
04/30/1993#2914214473
05/31/1993#2947214073
06/30/1993#2927214073
07/31/1993#2957213973
08/31/1993#3028214173
09/30/1993#3037214573
10/31/1993#3088214373
11/30/1993#3110214473
12/31/1993#3129214473
01/31/1994Inactive213883
02/28/1994Inactive214083
03/31/1994Inactive213983
04/30/1994Inactive213483
05/31/1994Inactive213583
06/30/1994Inactive213383
07/31/1994Inactive213483
08/31/1994Inactive213583
09/30/1994Inactive213883
10/31/1994Inactive213583
11/30/1994Inactive213783
12/31/1994Inactive213683

These ratings, calculated for Rivero, J., 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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