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Career ratings for: Iotti, Pierluigi

  Date of rating  

World Rank Rating +/- Age
01/31/1994#3376211070
02/28/1994#3445211070
03/31/1994#3479210770
04/30/1994#3462210770
05/31/1994#3472211070
06/30/1994#3506211170
07/31/1994#3537211070
08/31/1994#3590210970
09/30/1994#3618210770
10/31/1994#3584211771
11/30/1994#3676211971
12/31/1994#3695211971
01/31/1995Inactive211876
02/28/1995Inactive211976
03/31/1995Inactive211776
04/30/1995Inactive211676
05/31/1995Inactive211776
06/30/1995Inactive211876
07/31/1995#3925212771
08/31/1995#3945212871
09/30/1995#4008212971
10/31/1995#3965213972
11/30/1995#3963213772
12/31/1995#3974213872
01/31/1996Inactive213377
02/29/1996Inactive213377
03/31/1996Inactive213377
04/30/1996Inactive213177
05/31/1996Inactive213077
06/30/1996Inactive213077
07/31/1996Inactive212181
08/31/1996Inactive212481
09/30/1996Inactive212481
10/31/1996Inactive213282
11/30/1996Inactive213182
12/31/1996Inactive213382
01/31/1997Inactive212888
02/28/1997Inactive212888
03/31/1997Inactive212588
04/30/1997Inactive212388
05/31/1997#4390215075
06/30/1997#4370215275
07/31/1997#4367215471
08/31/1997#4407215471
09/30/1997#4419215371
10/31/1997#4387216271
11/30/1997#4397216171
12/31/1997#4428216171
01/31/1998#3999218256
02/28/1998#4017218156
03/31/1998#4010218356
04/30/1998#4048218356
05/31/1998#4107217956
06/30/1998#4134217956
07/31/1998#4243217257
08/31/1998#4337216857
09/30/1998#4396216657
10/31/1998#4265217957
11/30/1998#4289217857
12/31/1998#4331217757
01/11/1999#4027217757
01/18/1999#4033217757
01/25/1999#4044217857
02/01/1999#3490217962
02/08/1999#3494218062
02/15/1999#3509217962
02/22/1999#3528218062
03/01/1999#3545217662
03/08/1999#3555217862
03/15/1999#3556217762
03/22/1999#3547217962
03/29/1999#3555217962
04/05/1999#3546218162
04/12/1999#3558218162
04/19/1999#3564218262
04/26/1999#3577218262
05/03/1999#3584218062
05/10/1999#3585217962
05/17/1999#3595217962
05/24/1999#3625217862
05/31/1999#3644217862
06/07/1999#3707217363
06/14/1999#3711217363
06/21/1999#3722217263
06/28/1999#3724217363
07/05/1999#3681217663
07/12/1999#3683217763
07/19/1999#3686217863
07/26/1999#3714217863
08/02/1999#3768217063
08/09/1999#3773217263
08/16/1999#3814216963
08/23/1999#3850216862
08/30/1999#3870216762
09/06/1999#3852216362
09/13/1999#3875216262
09/20/1999#3886216362
09/27/1999#3898216362
10/04/1999#3819216362
10/11/1999#3836216362
10/18/1999#3876216362
10/25/1999#3892216362
11/01/1999#3620217662
11/08/1999#3624217662
11/15/1999#3642217662
11/22/1999#3657217662
11/29/1999#3680217662
12/06/1999#3630217562
12/13/1999#3644217662
12/20/1999#3652217562
12/27/1999#3662217662
01/03/2000#3652217762
01/10/2000#3665217862
01/17/2000#3672217962
01/24/2000#3686217962
01/31/2000#3687218062
02/07/2000#3316218167
02/14/2000#3314218167
02/21/2000#3342218167
02/28/2000#3345218367
03/06/2000#3342218167
03/13/2000#3364218067
03/20/2000#3369218067
03/27/2000#3379217867
04/03/2000#3400217767
04/10/2000#3382217767
04/17/2000#3401217867
04/24/2000#3416217767
05/01/2000#3426217767
05/08/2000#3444217467
05/15/2000#3454217567
05/22/2000#3473217467
05/29/2000#3469217467
06/05/2000#3482217467
06/12/2000#3518217068
06/19/2000#3550217068
06/26/2000#3553217068
07/03/2000#3561217068
07/10/2000#3523217268
07/17/2000#3533217268
07/24/2000#3553217268
07/31/2000#3573217268
08/07/2000#3617216468
08/14/2000#3626216468
08/21/2000#3652216468
08/28/2000#3646216569
09/04/2000#3813215065
09/11/2000#3773215165
09/18/2000#3769215165
09/25/2000#3767215165
10/02/2000#3773215065
10/09/2000#3728215065
10/16/2000#3740214865
10/23/2000#3769214865
10/30/2000#3787214765
11/06/2000#3593216065
11/13/2000#3611216065
11/20/2000#3654216265
11/27/2000#3654216265
12/04/2000#3653216465
12/11/2000#3622216565
12/18/2000#3629216665
12/25/2000#3628216765
01/01/2001#3644216865
01/08/2001#3617216864
01/15/2001#3852214160
01/22/2001#3860214260
01/29/2001#3875214360
02/05/2001#3820214360
02/12/2001#3645214061
02/19/2001#3664214061
02/26/2001#3657214061
03/05/2001#3667213961
03/12/2001#3666213761
03/19/2001#3656213761
03/26/2001#3663213761
04/02/2001#3674213661
04/09/2001#3679213661
04/16/2001#3681213761
04/23/2001#3689213661
04/30/2001#3730213661
05/07/2001#3790213661
05/14/2001#3819213561
05/21/2001#3814213461
05/28/2001#3817213461
06/04/2001#3820213461
06/11/2001#3790213561
06/18/2001#3830213361
06/25/2001#3822213361
07/02/2001#3815213361
07/09/2001#3814213361
07/16/2001#3798213561
07/23/2001#3819213461
07/30/2001#3855213361
08/06/2001#3890213461
08/13/2001#3932212762
08/20/2001#3945212762
08/27/2001#4027212762
09/03/2001#4042212862
09/10/2001#4054212863

These ratings, calculated for Iotti, Pierluigi, 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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