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Career ratings for: Jarvela, Jari

  Date of rating  

World Rank Rating +/- Age
01/31/1997Inactive210484
02/28/1997Inactive210584
03/31/1997Inactive213481
04/30/1997Inactive212881
05/31/1997Inactive212681
06/30/1997Inactive212981
07/31/1997Inactive210184
08/31/1997Inactive210184
09/30/1997Inactive212581
10/31/1997Inactive210184
11/30/1997Inactive210184
12/31/1997Inactive212681
01/31/1998#4729209474
02/28/1998#4747209474
03/31/1998#4544213673
04/30/1998#4585213573
05/31/1998#4606213473
06/30/1998#4649213573
07/31/1998#4914209374
08/31/1998#4993209374
09/30/1998#4788213573
10/31/1998#5126209674
11/30/1998#5195209574
12/31/1998#4921213373
01/11/1999#4605213373
01/18/1999#4613213373
01/25/1999#4627213473
02/01/1999Inactive208785
02/08/1999Inactive208885
02/15/1999Inactive208885
02/22/1999Inactive208785
03/01/1999Inactive208885
03/08/1999Inactive208985
03/15/1999Inactive208885
03/22/1999Inactive208885
03/29/1999Inactive208885
04/05/1999Inactive213084
04/12/1999Inactive212984
04/19/1999Inactive213084
04/26/1999Inactive213084
05/03/1999Inactive212884
05/10/1999Inactive212784
05/17/1999Inactive212784
05/24/1999Inactive212784
05/31/1999Inactive212784
06/07/1999Inactive212884
06/14/1999Inactive212884
06/21/1999Inactive212784
06/28/1999Inactive212784
07/05/1999Inactive212884
07/12/1999Inactive212884
07/19/1999Inactive212884
07/26/1999Inactive212884
08/02/1999Inactive208785
08/09/1999Inactive208885
08/16/1999Inactive208885
08/23/1999Inactive208685
08/30/1999Inactive208785
09/06/1999Inactive208885
09/13/1999Inactive208785
09/20/1999Inactive208885
09/27/1999Inactive208885
10/04/1999Inactive212884
10/11/1999Inactive212884
10/18/1999Inactive212884
10/25/1999Inactive212884
11/01/1999Inactive208885
11/08/1999Inactive208885
11/15/1999Inactive208885
11/22/1999Inactive208885
11/29/1999Inactive208985
12/06/1999Inactive208985
12/13/1999Inactive208985
12/20/1999Inactive208885
12/27/1999Inactive208885
01/03/2000Inactive212984
01/10/2000Inactive212984
01/17/2000Inactive212984
01/24/2000Inactive212984
01/31/2000Inactive213084

These ratings, calculated for Jarvela, Jari, 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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