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Career ratings for: Lehtisalo, Marko

  Date of rating  

World Rank Rating +/- Age
07/31/1996Inactive217578
08/31/1996Inactive217778
09/30/1996Inactive216778
10/31/1996Inactive216278
11/30/1996#4280215172
12/31/1996#4341214772
01/31/1997#4499212174
02/28/1997#4524212174
03/31/1997#4580211974
04/30/1997#4614211674
05/31/1997#4648211674
06/30/1997#4626211974
07/31/1997#4502214072
08/31/1997#4531214172
09/30/1997#4557213872
10/31/1997#4663213772
11/30/1997#4448215770
12/31/1997#4513215570
01/31/1998Inactive212876
02/28/1998Inactive212776
03/31/1998Inactive212776
04/30/1998Inactive212776
05/31/1998Inactive212676
06/30/1998Inactive212776
07/31/1998#4567214675
08/31/1998#4630214675
09/30/1998#4688214575
10/31/1998#4732214575
11/30/1998#4553216274
12/31/1998#4623215874
01/11/1999#4313215874
01/18/1999#4321215874
01/25/1999#4334215974
02/01/1999Inactive212187
02/08/1999Inactive212287
02/15/1999Inactive212187
02/22/1999Inactive212187
03/01/1999Inactive212187
03/08/1999Inactive212287
03/15/1999Inactive212187
03/22/1999Inactive212187
03/29/1999Inactive212187
04/05/1999Inactive212087
04/12/1999Inactive212087
04/19/1999Inactive212187
04/26/1999Inactive212187
05/03/1999Inactive212087
05/10/1999Inactive211987
05/17/1999Inactive211987
05/24/1999Inactive211987
05/31/1999Inactive212087
06/07/1999Inactive212087
06/14/1999Inactive212087
06/21/1999Inactive211987
06/28/1999Inactive212087
07/05/1999Inactive212187
07/12/1999Inactive212087
07/19/1999Inactive212187
07/26/1999Inactive212187
08/02/1999Inactive213986
08/09/1999Inactive214086
08/16/1999Inactive214086
08/23/1999Inactive213986
08/30/1999Inactive213986
09/06/1999Inactive214186
09/13/1999Inactive214086
09/20/1999Inactive214186
09/27/1999Inactive214186
10/04/1999Inactive213886
10/11/1999Inactive213886
10/18/1999Inactive213886
10/25/1999Inactive213886
11/01/1999Inactive213886
11/08/1999Inactive213786
11/15/1999Inactive213886
11/22/1999Inactive213786
11/29/1999Inactive213886
12/06/1999Inactive215784
12/13/1999Inactive215684
12/20/1999Inactive215584
12/27/1999Inactive215584
01/03/2000Inactive215484
01/10/2000Inactive215584
01/17/2000Inactive215484
01/24/2000Inactive215484
01/31/2000Inactive215584

These ratings, calculated for Lehtisalo, Marko, 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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