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Career ratings for: Romero Leon, Antonio

  Date of rating  

World Rank Rating +/- Age
01/31/1996Inactive230486
02/29/1996Inactive230086
03/31/1996Inactive231686
04/30/1996Inactive230786
05/31/1996Inactive230686
06/30/1996Inactive230486
07/31/1996#1604234768
08/31/1996#1443236368
09/30/1996#1463236168
10/31/1996#1460236268
11/30/1996#1486235968
12/31/1996#1504235968
01/31/1997#1109239465
02/28/1997#1160239065
03/31/1997#1013240465
04/30/1997#1095239565
05/31/1997#1102239365
06/30/1997#1090239565
07/31/1997#1189238568
08/31/1997#1033240069
09/30/1997#1037239869
10/31/1997#1047239969
11/30/1997#1067239669
12/31/1997#1075239569
01/31/1998#1157238373
02/28/1998#1222237973
03/31/1998#1075239674
04/30/1998#1171238874
05/31/1998#1171238874
06/30/1998#1166238874
07/31/1998Inactive237978
08/31/1998Inactive239278
09/30/1998Inactive239178
10/31/1998Inactive239178
11/30/1998Inactive238678
12/31/1998Inactive238578
01/11/1999Inactive238578
01/18/1999Inactive238678
01/25/1999Inactive238678
02/01/1999Inactive237484
02/08/1999Inactive237584
02/15/1999Inactive237484
02/22/1999Inactive237584
03/01/1999Inactive236984
03/08/1999Inactive237184
03/15/1999Inactive237084
03/22/1999Inactive237184
03/29/1999Inactive237184
04/05/1999Inactive238884
04/12/1999Inactive238884
04/19/1999Inactive238984
04/26/1999Inactive238984
05/03/1999Inactive238084
05/10/1999Inactive237984
05/17/1999Inactive237984
05/24/1999Inactive237784
05/31/1999Inactive237884
06/07/1999Inactive237684
06/14/1999Inactive237784
06/21/1999Inactive237684
06/28/1999Inactive237784
07/05/1999Inactive237984
07/12/1999Inactive237984
07/19/1999Inactive238084
07/26/1999Inactive238084
08/02/1999Inactive237289
08/09/1999Inactive237389
08/16/1999Inactive237089
08/23/1999Inactive237289
08/30/1999Inactive237189
09/06/1999Inactive238689
09/13/1999Inactive238589
09/20/1999Inactive238689
09/27/1999Inactive238689
10/04/1999Inactive238689
10/11/1999Inactive238589
10/18/1999Inactive238689
10/25/1999Inactive238689
11/01/1999Inactive238689
11/08/1999Inactive238689
11/15/1999Inactive238689
11/22/1999Inactive238689
11/29/1999Inactive238789
12/06/1999Inactive238389
12/13/1999Inactive238489
12/20/1999Inactive238389
12/27/1999Inactive238389
01/03/2000Inactive238489
01/10/2000Inactive238489
01/17/2000Inactive238589
01/24/2000Inactive238689
01/31/2000Inactive238689

These ratings, calculated for Romero Leon, Antonio, 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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