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Top 10 players on their 12th birthday


Player Rating +/-
1 Leko, Peter234165
2 Baramidze, David233473
3 Bacrot, Etienne232257
4 Riazantsev, Alexander231367
5 Radjabov, Teimour231164
6 Vallejo Pons, Francisco230466
7 Sabao, Raimundo227271
8 Thiruchelvam, Thirumurugan226561
9 Brkic, Ante225075
10 Polgar, Judit224962

About these ratings

All players on their 12th birthday


Player Rating +/- Best? 75%? Rating Date
1 Leko, Peter 23416521.5%#608/31/1991: #1280
2 Baramidze, David 23347320.7%#709/25/2000: #1643
3 Bacrot, Etienne 23225711.4%#712/31/1994: #1798
4 Riazantsev, Alexander 23136711.5%#908/31/1997: #2103
5 Radjabov, Teimour 23116410.4%#903/08/1999: #1870
6 Vallejo Pons, Francisco 2304669.1%#907/31/1994: #1999
7 Sabao, Raimundo 2272714.5%#1206/30/1974: #534
8 Thiruchelvam, Thirumurugan 2265612.3%#1312/11/2000: #2505
9 Brkic, Ante 2250753.0%#1503/27/2000: #2643
10 Polgar, Judit 2249621.4%#1406/30/1988: #1171
11 McShane, Luke J 2239580.6%#1512/31/1995: #3035
12 Stellwagen, Daniel 2237711.5%#1603/01/1999: #2825
13 Navara, David 2228671.0%#1602/28/1997: #3351
14 Hera, Imre Jr 2204570.1%#1808/31/1998: #3802
15 Leroy, Adrien 2204750.7%#1912/31/1992: #2487
16 Vass, Viktor 216663#2110/16/2000: #3591
17 Stojanovic, Andjelija 2159700.1%#2211/08/1999: #3803
18 Acs, Peter 2157750.1%#2304/30/1993: #2856
19 Jakab, Attila 215168#2311/30/1996: #4274
20 Ma Yu 214773#2304/03/2000: #3666
21 Molnar, Laszlo 214169#2302/29/1996: #4199
22 Antal, Gergely 213664#2402/28/1997: #4425
23 Markos, Jan 213073#2406/30/1997: #4555
24 Bellaiche, Antony 212373#2405/10/1999: #4087
25 Berkes, Ferenc 209165#2607/31/1997: #4759
26 Meszaros, Tamas 207273#2611/30/1997: #4937
27 Balogh, Csaba 206968#2603/15/1999: #4206

For each player on this list, the rating they possessed on their 12th birthday is listed. That rating was the last one calculated while they were 11 years of age, so it was their "current" rating on the day they turned 12. Players who played an insufficient number of games in recent years will not appear on the list, even though you may see them on lists for younger and/or older birthdays. Any players who had been completely inactive for three years are removed from the list.

Definition of columns in the above list:

# refers to the player's all-time rank on this list, compared to all other players when they turned 12.

Player is the full name of the player. Click on the player's name to see a career progression of their ratings.

Rating is the calculated rating for each player on their 12th birthday.

+/- 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" and removed from the ranking list due to their infrequent play against rated opponents. Mathematically, a player's rating is an estimate of their exact strength on their 12th birthday. The +/- value represents the standard deviation of that estimate; the player's true strength on their 12th birthday 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.

Best? is the estimated likelihood that the player was stronger on their 12th birthday than anyone else turning 12. Since ratings are known to be inaccurate, it is possible that a lower-rated player was actually much stronger than their rating would indicate, and it is also possible that other players were weaker than their ratings would indicate. This number indicates the likelihood that the player was indeed the strongest player ever among players turning 12. On a particular list, it will add up to 100% across the complete list of all players. This value is only calculated for the top 100 players on any rating list.

75%? gives a 75%-confidence world ranking for the player. Because ratings are known to be inaccurate, even if a particular player had the third-highest rating ever, among players turning 12, we cannot say with 100% certainty that they were truly one of the three strongest 12-year-old players. This number indicates the all-time rank that we are 75% sure the player is "no worse than". Thus if a player has a value of #12 in this column, we are 75% sure that the player is one of the twelve strongest players ever to turn 12. This value is only calculated for the top 100 players on any rating list.

Date is the exact date that the rating applied to. Click on that date to see the sorted list of all players' ratings on that date.

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