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Career ratings for: Araujo, Rodolfo

  Date of rating  

World Rank Rating +/- Age
02/28/1973Inactive216077
04/30/1973Inactive216177
06/30/1973Inactive216277
08/31/1973Inactive216377
10/31/1973Inactive215977
12/31/1973Inactive216077
02/28/1974Inactive215388
04/30/1974Inactive215388
06/30/1974Inactive215288
08/31/1974Inactive215388
10/31/1974Inactive214788
12/31/1974Inactive214888
04/30/1984#863217875
05/31/1984#863217675
06/30/1984#870217675
07/31/1984#875217675
08/31/1984#879217675
09/30/1984#886217675
10/31/1984#873217975
11/30/1984#920217975
12/31/1984#925217975
01/31/1985#947217775
02/28/1985#952218375
03/31/1985#952218175
04/30/1985Inactive217486
05/31/1985Inactive217086
06/30/1985Inactive217086
07/31/1985Inactive217186
08/31/1985Inactive217086
09/30/1985Inactive217086
10/31/1985Inactive217486
11/30/1985Inactive217686
12/31/1985Inactive217486
01/31/1986Inactive217286
02/28/1986Inactive217586
03/31/1986Inactive217686

These ratings, calculated for Araujo, Rodolfo, 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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