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Career ratings for: Zagrebelny, Sergey

  Date of rating  

World Rank Rating +/- Age
01/31/1986#457242567
02/28/1986#412243267
03/31/1986#418243567
04/30/1986#423243167
05/31/1986#445242767
06/30/1986#430243167
07/31/1986#405243866
08/31/1986#408243666
09/30/1986#401243866
10/31/1986#349245566
11/30/1986#344245866
12/31/1986#374245065
01/31/1987Inactive241776
02/28/1987Inactive242676
03/31/1987Inactive242576
04/30/1987Inactive242176
05/31/1987Inactive241776
06/30/1987Inactive242376
07/31/1987#431242875
08/31/1987#433242775
09/30/1987#435242775
10/31/1987#377244575
11/30/1987#373244675
12/31/1987#239249262
01/31/1988#258249262
02/29/1988#243250062
03/31/1988#249249962
04/30/1988#251249862
05/31/1988#264249462
06/30/1988#251249762
07/31/1988#252249962
08/31/1988#247250258
09/30/1988#257249858
10/31/1988#234250658
11/30/1988#228250758
12/31/1988#262249863
01/31/1989#202252759
02/28/1989#186253359
03/31/1989#219252258
04/30/1989#218252258
05/31/1989#227251958
06/30/1989#224251958
07/31/1989#225251858
08/31/1989#261250959
09/30/1989#266250859
10/31/1989#248251459
11/30/1989#247251559
12/31/1989#223252461
01/31/1990#196253461
02/28/1990#185253861
03/31/1990#184253862
04/30/1990#186253962
05/31/1990#191253362
06/30/1990#183253662
07/31/1990#187253662
08/31/1990#186253963
09/30/1990#199253662
10/31/1990#183254262
11/30/1990#192253962
12/31/1990#163254864
01/31/1991#188253965
02/28/1991#172254565
03/31/1991#179254566
04/30/1991#175254866
05/31/1991#176254866
06/30/1991#167254966
07/31/1991#172254966
08/31/1991#171255266
09/30/1991#335249859
10/31/1991#313250259
11/30/1991#319250259
12/31/1991#292250760
01/31/1992#395248258
02/29/1992#378248758
03/31/1992#387248658
04/30/1992#378248458
05/31/1992#379248358
06/30/1992#224253255
07/31/1992#222253455
08/31/1992#219253555
09/30/1992#218253657
10/31/1992#207254257
11/30/1992#204254157
12/31/1992#195254857
01/31/1993#175255253
02/28/1993#175255353
03/31/1993#176255153
04/30/1993#181255152
05/31/1993#182254852
06/30/1993#184254652
07/31/1993#183254752
08/31/1993#179254652
09/30/1993#184254652
10/31/1993#193254551
11/30/1993#185254951
12/31/1993#162256051
01/31/1994#169255952
02/28/1994#161256251
03/31/1994#162255851
04/30/1994#145256552
05/31/1994#153256551
06/30/1994#130257051
07/31/1994#170255651
08/31/1994#169255551
09/30/1994#153256251
10/31/1994#150256151
11/30/1994#153256251
12/31/1994#165255851
01/31/1995#198254450
02/28/1995#205254250
03/31/1995#208253950
04/30/1995#198254450
05/31/1995#237253349
06/30/1995#236253250
07/31/1995#236253350
08/31/1995#237253550
09/30/1995#213254250
10/31/1995#218254350
11/30/1995#213254250
12/31/1995#229254050
01/31/1996#259253352
02/29/1996#240253752
03/31/1996#250253452
04/30/1996#239253752
05/31/1996#216254452
06/30/1996#219254153
07/31/1996#228253653
08/31/1996#218254153
09/30/1996#188254952
10/31/1996#181255052
11/30/1996#206254252
12/31/1996#207254352
01/31/1997#303252053
02/28/1997#288252352
03/31/1997#296252152
04/30/1997#274252852
05/31/1997#335251052
06/30/1997#344250751
07/31/1997#369250351
08/31/1997#361250451
09/30/1997#353250251
10/31/1997#358250351
11/30/1997#308251351
12/31/1997#307251351
01/31/1998#275252350
02/28/1998#253252950
03/31/1998#255253050
04/30/1998#236253550
05/31/1998#196254751
06/30/1998#232253551
07/31/1998#212254051
08/31/1998#218253751
09/30/1998#302251450
10/31/1998#299251350
11/30/1998#319250751
12/31/1998#316250751
01/11/1999#306250751
01/18/1999#306250751
01/25/1999#306250851
02/01/1999#409248552
02/08/1999#406248552
02/15/1999#407248452
02/22/1999#427248052
03/01/1999#455247451
03/08/1999#419248351
03/15/1999#442247751
03/22/1999#441247851
03/29/1999#441247951
04/05/1999#440248151
04/12/1999#440248151
04/19/1999#444248151
04/26/1999#447248151
05/03/1999#428248651
05/10/1999#428248551
05/17/1999#426248551
05/24/1999#428248351
05/31/1999#428248351
06/07/1999#383249051
06/14/1999#385249051
06/21/1999#384249051
06/28/1999#382249151
07/05/1999#378249251
07/12/1999#378249251
07/19/1999#378249351
07/26/1999#378249451
08/02/1999#369249751
08/09/1999#407249051
08/16/1999#408248751
08/23/1999#366249750
08/30/1999#363249650
09/06/1999#356249750
09/13/1999#356249750
09/20/1999#358249750
09/27/1999#358249750
10/04/1999#336250350
10/11/1999#337250250
10/18/1999#337250350
10/25/1999#338250350
11/01/1999#318250850
11/08/1999#317250850
11/15/1999#315250850
11/22/1999#315250850
11/29/1999#314250850
12/06/1999#327250451
12/13/1999#325250451
12/20/1999#327250351
12/27/1999#323250451
01/03/2000#323250651
01/10/2000#323250751
01/17/2000#323250851
01/24/2000#324250851
01/31/2000#324250951
02/07/2000#435248951
02/14/2000#435248951
02/21/2000#434249051
02/28/2000#429249251
03/06/2000#443248951
03/13/2000#451248651
03/20/2000#446248851
03/27/2000#446248751
04/03/2000#446248651
04/10/2000#443248551
04/17/2000#444248651
04/24/2000#440248551
05/01/2000#439248551
05/08/2000#423248751
05/15/2000#424248851
05/22/2000#427248751
05/29/2000#426248751
06/05/2000#429248751
06/12/2000#396249252
06/19/2000#395249252
06/26/2000#398249252
07/03/2000#397249252
07/10/2000#394249252
07/17/2000#390249252
07/24/2000#391249252
07/31/2000#384249552
08/07/2000#368249652
08/14/2000#359249852
08/21/2000#362249852
08/28/2000#428248753
09/04/2000#427248653
09/11/2000#407249352
09/18/2000#410249152
09/25/2000#410249252
10/02/2000#411249052
10/09/2000#385249452
10/16/2000#387249352
10/23/2000#386249252
10/30/2000#387249152
11/06/2000#368249652
11/13/2000#397249152
11/20/2000#407249051
11/27/2000#406249151
12/04/2000#408249251
12/11/2000#424249051
12/18/2000#423249351
12/25/2000#418249451
01/01/2001#420249451
01/08/2001#413249551
01/15/2001#416249551
01/22/2001#413249651
01/29/2001#413249651
02/05/2001#410249751
02/12/2001#440248952
02/19/2001#444249052
02/26/2001#446248952
03/05/2001#443249052
03/12/2001#452248852
03/19/2001#459248553
03/26/2001#449248753
04/02/2001#450248753
04/09/2001#450248653
04/16/2001#448248653
04/23/2001#446248553
04/30/2001#453248453
05/07/2001#449248453
05/14/2001#439248753
05/21/2001#440248553
05/28/2001#443248453
06/04/2001#438248553
06/11/2001#535247052
06/18/2001#508247453
06/25/2001#505247453
07/02/2001#498247553
07/09/2001#476247852
07/16/2001#477247853
07/23/2001#474247753
07/30/2001#435248752
08/06/2001#495247452
08/13/2001#481247552
08/20/2001#520247052
08/27/2001#478247751
09/03/2001#518247151
09/10/2001#400249551

These ratings, calculated for Zagrebelny, Sergey, 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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