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Career ratings for: Moreira, Jairo

  Date of rating  

World Rank Rating +/- Age
01/31/1997#2123231274
02/28/1997#2447229172
03/31/1997#2446229272
04/30/1997#2425229472
05/31/1997#2349229772
06/30/1997#2355229772
07/31/1997#1164238768
08/31/1997#1152238868
09/30/1997#1180238474
10/31/1997#1528235372
11/30/1997#1562235072
12/31/1997#1600234672
01/31/1998#2050231273
02/28/1998#2367229172
03/31/1998#2349229572
04/30/1998#2300229872
05/31/1998#2227230272
06/30/1998#2261230172
07/31/1998Inactive238178
08/31/1998Inactive238078
09/30/1998Inactive237785
10/31/1998Inactive234582
11/30/1998Inactive234183
12/31/1998Inactive233783
01/11/1999Inactive233883
01/18/1999Inactive233883
01/25/1999Inactive233883
02/01/1999Inactive230384
02/08/1999Inactive230484
02/15/1999Inactive230384
02/22/1999Inactive230484
03/01/1999Inactive228183
03/08/1999Inactive228383
03/15/1999Inactive228283
03/22/1999Inactive228383
03/29/1999Inactive228383
04/05/1999Inactive228783
04/12/1999Inactive228683
04/19/1999Inactive228783
04/26/1999Inactive228783
05/03/1999Inactive229083
05/10/1999Inactive228983
05/17/1999Inactive228983
05/24/1999Inactive228783
05/31/1999Inactive228883
06/07/1999Inactive229183
06/14/1999Inactive229183
06/21/1999Inactive229083
06/28/1999Inactive229183
07/05/1999Inactive229283
07/12/1999Inactive229283
07/19/1999Inactive229383
07/26/1999Inactive229483
08/02/1999Inactive237489
08/09/1999Inactive237589
08/16/1999Inactive237389
08/23/1999Inactive237489
08/30/1999Inactive237389
09/06/1999Inactive237489
09/13/1999Inactive237389
09/20/1999Inactive237489
09/27/1999Inactive237489

These ratings, calculated for Moreira, Jairo, 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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