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Career ratings for: Jacobsen, Ole

  Date of rating  

World Rank Rating +/- Age
01/31/1997#3629220673
02/28/1997#3634220773
03/31/1997#3736220273
04/30/1997#3745220273
05/31/1997#3759220073
06/30/1997#3895219273
07/31/1997#3924219173
08/31/1997#4024218571
09/30/1997#4050218271
10/31/1997#4204217671
11/30/1997#4175217871
12/31/1997#4160218171
01/31/1998Inactive219683
02/28/1998Inactive219783
03/31/1998Inactive219483
04/30/1998Inactive219583
05/31/1998Inactive219583
06/30/1998Inactive218683
07/31/1998Inactive218583
08/31/1998Inactive217781
09/30/1998Inactive217581
10/31/1998Inactive216881
11/30/1998Inactive216981
12/31/1998Inactive217181
01/11/1999Inactive217281
01/18/1999Inactive217281
01/25/1999Inactive217281

These ratings, calculated for Jacobsen, Ole, 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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