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Career ratings for: Pinal, Nelson Borges

  Date of rating  

World Rank Rating +/- Age
04/30/1974#355236063
06/30/1974#366236363
08/31/1974#416234263
10/31/1974#395234263
12/31/1974#393234363
02/28/1975#384235262
04/30/1975#384235371
06/30/1975#371235671
08/31/1975#419233571
10/31/1975#404233971
12/31/1975#404234371
02/29/1976#367234870
04/30/1976Inactive235181
06/30/1976#376235268
08/31/1976#419233668
10/31/1976#419234168
12/31/1976#426234668
02/28/1977#403234567
04/30/1977#430234268
06/30/1977Inactive235478
08/31/1977Inactive233878
10/31/1977Inactive234078
12/31/1977Inactive234278
02/28/1978Inactive233976
04/30/1978Inactive233377
06/30/1978Inactive234689
08/31/1978Inactive233189
10/31/1978Inactive233389
12/31/1978Inactive233489
02/28/1979Inactive233387
04/30/1979Inactive232888
01/31/1983#517236367
02/28/1983#518236367
03/31/1983#524236367
04/30/1983#518236367
05/31/1983#492237659
06/30/1983#442239359
07/31/1983#446239259
08/31/1983#463238559
09/30/1983#485238959
10/31/1983#478239059
11/30/1983#488239159
12/31/1983#490238759
01/31/1984#548237058
02/29/1984#554236358
03/31/1984#548236458
04/30/1984#565236558
05/31/1984#557236960
06/30/1984#519238560
07/31/1984#528238560
08/31/1984#547238160
09/30/1984#538238360
10/31/1984#530238660
11/30/1984#547238460
12/31/1984#551238460
01/31/1985#665235057
02/28/1985#666234757
03/31/1985#671234557
04/30/1985#669234357
05/31/1985#667234358
06/30/1985#643235458
07/31/1985#652235558
08/31/1985#656235258
09/30/1985#639235558
10/31/1985#648235858
11/30/1985#650236058
12/31/1985#655235858
01/31/1986#689235263
02/28/1986#700234663
03/31/1986#701234763
04/30/1986#699234463
05/31/1986#693234664
06/30/1986#662235564
07/31/1986#660235864
08/31/1986#668235464
09/30/1986#658235664
10/31/1986#673235764
11/30/1986#685235864
12/31/1986#691235864
01/31/1987#728235072
02/28/1987#732234772
03/31/1987#732234572
04/30/1987#752234272
05/31/1987#755234273
06/30/1987#720235473
07/31/1987#724235473
08/31/1987#731235173
09/30/1987#730235273
10/31/1987#741235373
11/30/1987#732235373
12/31/1987#734235273
01/31/1988Inactive234982
02/29/1988Inactive234882
03/31/1988Inactive234782
04/30/1988Inactive234882
05/31/1988Inactive234783
06/30/1988Inactive235983
07/31/1988Inactive235983
08/31/1988Inactive235683
09/30/1988Inactive235883
10/31/1988Inactive235883
11/30/1988Inactive235983
12/31/1988Inactive236083

These ratings, calculated for Pinal, Nelson Borges, 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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