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Career ratings for: Knoppert, Erik GJ

  Date of rating  

World Rank Rating +/- Age
01/31/1984#480239273
02/29/1984#475238973
03/31/1984#472239173
04/30/1984#508238573
05/31/1984#494239073
06/30/1984#501239073
07/31/1984#514238873
08/31/1984#510239373
09/30/1984#507239273
10/31/1984#496239773
11/30/1984#507239773
12/31/1984#502240073
01/31/1985Inactive239283
02/28/1985Inactive239083
03/31/1985Inactive238983
04/30/1985Inactive238183
05/31/1985Inactive238583
06/30/1985Inactive238483
07/31/1985Inactive238383
08/31/1985Inactive235579
09/30/1985Inactive235579
10/31/1985Inactive236079
11/30/1985Inactive236279
12/31/1985Inactive236279
01/31/1986Inactive235586
02/28/1986Inactive235386
03/31/1986Inactive235686
04/30/1986Inactive234886
05/31/1986Inactive235286
06/30/1986Inactive235086
07/31/1986Inactive235086
11/30/1986Inactive238283
12/31/1986Inactive238483
01/31/1987Inactive242282
02/28/1987Inactive242282
03/31/1987Inactive242282
04/30/1987Inactive241582
05/31/1987Inactive241782
06/30/1987Inactive241982
07/31/1987Inactive241782
08/31/1987Inactive241983
09/30/1987Inactive238679
10/31/1987Inactive238879
11/30/1987Inactive239281
12/31/1987Inactive239381
01/31/1988Inactive240180
02/29/1988Inactive240580
03/31/1988Inactive240580
04/30/1988Inactive240180
05/31/1988Inactive240280
06/30/1988Inactive240280
07/31/1988Inactive240180
08/31/1988Inactive240381
09/30/1988Inactive237983
10/31/1988Inactive237983
11/30/1988Inactive238484
12/31/1988Inactive238784
01/31/1991Inactive239879
02/28/1991Inactive239979
03/31/1991Inactive239979
04/30/1991Inactive239979
05/31/1991Inactive240279
06/30/1991Inactive240179
07/31/1991#887239373
08/31/1991#889239573
09/30/1991#1004237773
10/31/1991#989237873
11/30/1991#972238173
12/31/1991#970238273
01/31/1992Inactive238779
02/29/1992Inactive238979
03/31/1992#659242962
04/30/1992#689242462
05/31/1992#687242662
06/30/1992#697242562
07/31/1992#697242662
08/31/1992#702242762
09/30/1992#784241562
10/31/1992#735242561
11/30/1992#715242561
12/31/1992#710242961
01/31/1993#581245161
02/28/1993#564245461
03/31/1993#588244964
04/30/1993#609244964
05/31/1993#584244964
06/30/1993#574245064
07/31/1993#600244664
08/31/1993#708243063
09/30/1993#862240862
10/31/1993#857240863
11/30/1993#822241561
12/31/1993#816241761
01/31/1994#771242361
02/28/1994#769242561
03/31/1994#797241762
04/30/1994#813241662
05/31/1994#800242062
06/30/1994#802241962
07/31/1994#673243961
08/31/1994#749242660
09/30/1994#841241359
10/31/1994#847241159
11/30/1994#963240359
12/31/1994#841241560
01/31/1995#800242257
02/28/1995#785242357
03/31/1995#814241957
04/30/1995#813242057
05/31/1995#806242257
06/30/1995#808242457
07/31/1995#838242158
08/31/1995#1070239556
09/30/1995#1115239056
10/31/1995#1095239456
11/30/1995#1167238657
12/31/1995#1081239757
01/31/1996#1043240559
02/29/1996#1018240759
03/31/1996#1051240259
04/30/1996#1056240259
05/31/1996#1044240359
06/30/1996#1029240259
07/31/1996#1040240059
08/31/1996#1112239361
09/30/1996#1178238761
10/31/1996#1163239061
11/30/1996#1420236459
12/31/1996#1351237359
01/31/1997#1492236159
02/28/1997#1460236359
03/31/1997#1490236059
04/30/1997#1472236259
05/31/1997#1463236159
06/30/1997#1470236159
07/31/1997#1723234158
08/31/1997#1806233459
09/30/1997#1889232659
10/31/1997#1860232959
11/30/1997#1749233661
12/31/1997#1674234161
01/31/1998#1707233563
02/28/1998#1690233863
03/31/1998#1720233764
04/30/1998#1707234064
05/31/1998#1701234164
06/30/1998#1698234064
07/31/1998#1635234663
08/31/1998#1722233764
09/30/1998#1805233064
10/31/1998#1952232061
11/30/1998#1849232562
12/31/1998#1787233062
01/11/1999#1657233162
01/18/1999#1656233162
01/25/1999#1658233162
02/01/1999#1649232663
02/08/1999#1652232663
02/15/1999#1656232663
02/22/1999#1667232763
03/01/1999#1663232663
03/08/1999#1667232763
03/15/1999#1667232663
03/22/1999#1664232863
03/29/1999#1666232863
04/05/1999#1711232863
04/12/1999#1712232863
04/19/1999#1716232963
04/26/1999#1721232863
05/03/1999#1702233163
05/10/1999#1701233063
05/17/1999#1702233063
05/24/1999#1713232863
05/31/1999#1722232863
06/07/1999#1710232863
06/14/1999#1705232863
06/21/1999#1710232763
06/28/1999#1712232863
07/05/1999#1705232963
07/12/1999#1707233063
07/19/1999#1704233163
07/26/1999#1568234362
08/02/1999#1527234563
08/09/1999#1527234663
08/16/1999#1614233662
08/23/1999#1619233862
08/30/1999#1622233762
09/06/1999#1679233162
09/13/1999#1680233162
09/20/1999#1686233162
09/27/1999#1687233162
10/04/1999#1720232862
10/11/1999#1719232862
10/18/1999#1734232862
10/25/1999#1730232862
11/01/1999#1710232965
11/08/1999#1709232965
11/15/1999#1710232965
11/22/1999#1719232965
11/29/1999#1722233065
12/06/1999#1641233465
12/13/1999#1638233565
12/20/1999#1636233465
12/27/1999#1640233565
01/03/2000#1584234165
01/10/2000#1587234165
01/17/2000#1587234265
01/24/2000#1588234365
01/31/2000#1586234465
02/07/2000#1584234066
02/14/2000#1583234066
02/21/2000#1412235664
02/28/2000#1416235764
03/06/2000#1399235764
03/13/2000#1400235664
03/20/2000#1400235664
03/27/2000#1401235564
04/03/2000#1405235464
04/10/2000#1432235164
04/17/2000#1437235264
04/24/2000#1439235164
05/01/2000#1442235164
05/08/2000#1428235164
05/15/2000#1430235364
05/22/2000#1431235164
05/29/2000#1432235264
06/05/2000#1430235164
06/12/2000#1425235264
06/19/2000#1433235264
06/26/2000#1432235264
07/03/2000#1435235264
07/10/2000#1437235264
07/17/2000#1433235364
07/24/2000#1438235264
07/31/2000#1447235165
08/07/2000#1430235266
08/14/2000#1437235266
08/21/2000#1418235467
08/28/2000#1416235567
09/04/2000#1418235467
09/11/2000#1471235067
09/18/2000#1473235067
09/25/2000#1476235067
10/02/2000#1474234967
10/09/2000#1494234667
10/16/2000#1486234467
10/23/2000#1489234467
10/30/2000#1488234367
11/06/2000#1446234669
11/13/2000#1454234669
11/20/2000#1469234869
11/27/2000#1468234869
12/04/2000#1475235069
12/11/2000#1404235770
12/18/2000#1407235870
12/25/2000#1410235970
01/01/2001#1422235970
01/08/2001#1370236370
01/15/2001#1372236470
01/22/2001#1371236470
01/29/2001#1372236570
02/05/2001#1362236570
02/12/2001#1378236271
02/19/2001#1375236271
02/26/2001#1405235873
03/05/2001#1398235873
03/12/2001#1393235873
03/19/2001#1393235773
03/26/2001#1397235773
04/02/2001#1395235773
04/09/2001#1397235673
04/16/2001#1425235473
04/23/2001#1420235373
04/30/2001#1429235373
05/07/2001#1430235273
05/14/2001#1424235473
05/21/2001#1423235373
05/28/2001#1421235273
06/04/2001#1421235373
06/11/2001#1420235473
06/18/2001#1413235673
06/25/2001#1415235573
07/02/2001#1410235673
07/09/2001#1414235573
07/16/2001#1409235673
07/23/2001#1407235573
07/30/2001#1410235573
08/06/2001#1424235474
08/13/2001Inactive235576
08/20/2001Inactive235676
08/27/2001Inactive235776
09/03/2001Inactive235876
09/10/2001Inactive235876

These ratings, calculated for Knoppert, Erik GJ, 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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