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Career ratings for: O'Rourke, Ray

  Date of rating  

World Rank Rating +/- Age
11/30/1998#4947212869
12/31/1998#4988212869
01/11/1999#4671212869
01/18/1999#4679212869
01/25/1999#4693212869
02/01/1999#4003212169
02/08/1999#4009212269
02/15/1999#4034212169
02/22/1999#4066212169
03/01/1999#3752216072
03/08/1999#3814215768
03/15/1999#3815215668
03/22/1999#3817215668
03/29/1999#3825215668
04/05/1999#3496218767
04/12/1999#3508218767
04/19/1999#3515218767
04/26/1999#3527218767
05/03/1999#3730216968
05/10/1999#3731216868
05/17/1999#3744216868
05/24/1999#3771216668
05/31/1999#3792216768
06/07/1999#3754217068
06/14/1999#3762217068
06/21/1999#3773216968
06/28/1999#3776217068
07/05/1999#3872216067
07/12/1999#3880216067
07/19/1999#3889216067
07/26/1999#3923216067
08/02/1999#3892215967
08/09/1999#3899216067
08/16/1999#3909216067
08/23/1999#3948215867
08/30/1999#3951215967
09/06/1999#3697217667
09/13/1999#3717217567
09/20/1999#3726217667
09/27/1999#3740217667
10/04/1999#3680217567
10/11/1999#3695217567
10/18/1999#3739217567
10/25/1999#3747217567
11/01/1999#3849215469
11/08/1999#3858215469
11/15/1999#3877215469
11/22/1999#3901215469
11/29/1999#3928215469
12/06/1999#4023213073
12/13/1999#4048213073
12/20/1999#4060212973
12/27/1999#4076212973
01/03/2000#4052213173
01/10/2000#4076213173
01/17/2000#4101213173
01/24/2000#4115213173
01/31/2000#4116213273
02/07/2000#3722212573
02/14/2000#3724212573
02/21/2000#3747212673
02/28/2000#3748212773
03/06/2000#3555215675
03/13/2000Inactive215578
03/20/2000Inactive215578
03/27/2000Inactive215478
04/03/2000Inactive215378
04/10/2000Inactive218276
04/17/2000Inactive218276
04/24/2000Inactive218176
05/01/2000Inactive218176
05/08/2000Inactive216178
05/15/2000Inactive216378
05/22/2000Inactive216278
05/29/2000Inactive216278
06/05/2000Inactive216278
06/12/2000Inactive216678
06/19/2000Inactive216678
06/26/2000Inactive216578
07/03/2000Inactive216678
07/10/2000Inactive215476
07/17/2000Inactive215476
07/24/2000Inactive215476
07/31/2000Inactive215476
08/07/2000Inactive215276
08/14/2000Inactive215376
08/21/2000Inactive215476
08/28/2000Inactive215376
09/04/2000Inactive215276
09/11/2000Inactive217177
09/18/2000Inactive217177
09/25/2000Inactive217177
10/02/2000Inactive217077
10/09/2000Inactive216977
10/16/2000Inactive216877
10/23/2000Inactive216777
10/30/2000Inactive216777
11/06/2000Inactive214879
11/13/2000Inactive214779
11/20/2000Inactive214679
11/27/2000Inactive214779
12/04/2000Inactive214979
12/11/2000Inactive212483
12/18/2000Inactive212583
12/25/2000Inactive212483
01/01/2001Inactive212483
01/08/2001Inactive212583
01/15/2001Inactive212683
01/22/2001Inactive212783
01/29/2001Inactive212683
02/05/2001Inactive212683
02/12/2001Inactive212083
02/19/2001Inactive212083
02/26/2001Inactive212083
03/05/2001#3735212875
03/12/2001Inactive215476
03/19/2001Inactive215378
03/26/2001Inactive215378
04/02/2001Inactive215378
04/09/2001Inactive215378
04/16/2001#3389217474
04/23/2001#3389217374
04/30/2001#3433217274
05/07/2001#3484217274
05/14/2001#3597216375
05/21/2001#3602216175
05/28/2001#3605216075
06/04/2001#3604216075
06/11/2001#3606215875
06/18/2001#3605216075
06/25/2001#3584216275
07/02/2001#3582216375
07/09/2001#3580216275
07/16/2001#3612215974
07/23/2001#3627215974
07/30/2001#3653215974
08/06/2001#3687215974
08/13/2001#3698215874
08/20/2001#3714215874
08/27/2001#3788215874
09/03/2001#3800215874
09/10/2001#3809215874

These ratings, calculated for O'Rourke, Ray, 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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