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Career ratings for: Cordero, Alfredo

  Date of rating  

World Rank Rating +/- Age
05/01/2000Inactive219983
05/08/2000#3297218975
05/15/2000#3306219175
05/22/2000#3317219075
05/29/2000#3315218975
06/05/2000#3328218975
06/12/2000#3298219175
06/19/2000#3331219175
06/26/2000#3332219175
07/03/2000#3340219175
07/10/2000#3313219275
07/17/2000#3307219475
07/24/2000#3314219475
07/31/2000#3343219475
08/07/2000#3333219275
08/14/2000#3342219275
08/21/2000#3350219275
08/28/2000#3348219375
09/04/2000#3363219275
09/11/2000#3330219375
09/18/2000#3328219475
09/25/2000#3325219475
10/02/2000#3326219275
10/09/2000#3284219275
10/16/2000#3311218975
10/23/2000#3328218975
10/30/2000#3337218975
11/06/2000#3220219375
11/13/2000#3241219275
11/20/2000#3290219475
11/27/2000#3292219475
12/04/2000#3297219675
12/11/2000#3314219375
12/18/2000#3273219875
12/25/2000#3282219975
01/01/2001#3291219975
01/08/2001#3278219975
01/15/2001#3277219975
01/22/2001#3288220075
01/29/2001#3300220075
02/05/2001#3297219775
02/12/2001#3179219575
02/19/2001#3193219575
02/26/2001#3197219475
03/05/2001#3201219475
03/12/2001#3148219675
03/19/2001#3147219575
03/26/2001#3149219575
04/02/2001#3153219575
04/09/2001#3156219575
04/16/2001#3152219675
04/23/2001Inactive219077
04/30/2001Inactive219077
05/07/2001Inactive219780
05/14/2001Inactive218686
05/21/2001Inactive218486
05/28/2001Inactive218486
06/04/2001Inactive218486
06/11/2001Inactive218586
06/18/2001Inactive218786
06/25/2001Inactive218786
07/02/2001Inactive218886
07/09/2001Inactive218786
07/16/2001Inactive218886
07/23/2001Inactive218986
07/30/2001Inactive218986
08/06/2001Inactive219086
08/13/2001Inactive218886
08/20/2001Inactive218986
08/27/2001Inactive218886
09/03/2001Inactive218986
09/10/2001Inactive218986

These ratings, calculated for Cordero, Alfredo, 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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