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Career ratings for: Prieto, Ernesto

  Date of rating  

World Rank Rating +/- Age
12/31/1996Inactive217580
01/31/1997Inactive218280
02/28/1997#4383214174
03/31/1997#4445213974
04/30/1997#4483213674
05/31/1997#4503213774
06/30/1997#4496213974
07/31/1997#4511213974
08/31/1997#4555213774
09/30/1997#4550213974
10/31/1997#4648213974
11/30/1997#4637213974
12/31/1997Inactive214079
01/31/1998Inactive214379
02/28/1998Inactive213184
03/31/1998Inactive213184
04/30/1998Inactive213184
05/31/1998Inactive213284
06/30/1998Inactive213184
07/31/1998Inactive213184
08/31/1998Inactive212985
09/30/1998Inactive213285
10/31/1998Inactive213385
11/30/1998Inactive213385
01/31/2000Inactive213783
02/07/2000Inactive213983
02/14/2000Inactive213983
02/21/2000Inactive214083
02/28/2000Inactive214183
03/06/2000Inactive213085
03/13/2000Inactive213085
03/20/2000Inactive213085
03/27/2000Inactive213085
04/03/2000Inactive213085
04/10/2000Inactive212985
04/17/2000Inactive212985
04/24/2000Inactive212885
05/01/2000Inactive212785
05/08/2000Inactive212685
05/15/2000Inactive212885
05/22/2000Inactive212885
05/29/2000Inactive212685
06/05/2000Inactive212685
06/12/2000Inactive212885
06/19/2000Inactive212885
06/26/2000Inactive212785
07/03/2000Inactive212885
07/10/2000Inactive212785
07/17/2000Inactive212885
07/24/2000Inactive212885
07/31/2000Inactive212885
08/07/2000Inactive212785
08/14/2000Inactive212785
08/21/2000Inactive212885
08/28/2000Inactive212885
09/04/2000Inactive212785
09/11/2000Inactive212785
09/18/2000Inactive212785
09/25/2000Inactive212785
10/02/2000Inactive212585
10/09/2000Inactive212785
10/16/2000Inactive212885
10/23/2000Inactive212985
10/30/2000Inactive212885
11/06/2000Inactive212985
11/13/2000Inactive212885
11/20/2000Inactive212885
11/27/2000Inactive212885
12/04/2000Inactive213085
12/11/2000Inactive213085
12/18/2000Inactive213185
12/25/2000Inactive213085
01/01/2001Inactive213380
01/08/2001Inactive213481
01/15/2001Inactive213581
01/22/2001Inactive213681
01/29/2001Inactive213681
02/05/2001Inactive213686
02/12/2001Inactive213986
02/19/2001Inactive213986
02/26/2001Inactive213886
03/05/2001Inactive213886
03/12/2001Inactive212987
03/19/2001Inactive212987
03/26/2001Inactive212987
04/02/2001Inactive212987
04/09/2001Inactive212987
04/16/2001Inactive212887
04/23/2001Inactive212787
04/30/2001Inactive212687
05/07/2001Inactive212887
05/14/2001Inactive212887
05/21/2001Inactive212787
05/28/2001Inactive212787
06/04/2001Inactive212687
06/11/2001Inactive212487
06/18/2001Inactive212687
06/25/2001Inactive212887
07/02/2001Inactive212887
07/09/2001Inactive212887
07/16/2001Inactive212787
07/23/2001Inactive212887
07/30/2001Inactive212887
08/06/2001Inactive212887
08/13/2001Inactive212887
08/20/2001Inactive212787
08/27/2001Inactive213577
09/03/2001Inactive213577
09/10/2001Inactive213677

These ratings, calculated for Prieto, Ernesto, 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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