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Individual Calculations September 2023 |
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| Karell, Leif Total change: -84.40 | |   |
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| 10th Annual Potomac Open - U2200 | Rockville, MD | USA | 2023-07-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1619 | 1652 | 0.00 | 4 | -2.18 | 20 | -43.60 | |
|  Ramnath, Architsai | | | 1580 | USA | 0.00 | 1 | -0.60 | 20 | -12.00 | |  Baim, Elvin | | | 1638 | AZE | 0.00 | 1 | -0.52 | 20 | -10.40 | | | Srinivasan, Arjun | | | 1771 | USA | 0.00 | 1 | -0.34 | 20 | -6.80 | | | Deng, Michael | | | 1486 | USA | 0.00 | 1 | -0.72 | 20 | -14.40 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | | | 2nd Annual Beltway Open | Herndon, Virginia | USA | 2023-08-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1687 | 1634 | 2.00 | 5 | -0.26 | 20 | -5.20 | |
| | Lowinger, Daniel | | | 2040 | USA | 0.00 | 1 | -0.08 | 20 | -1.60 | | | Amin, Tariq M | | | 1468 | USA | 0.00 | 1 | -0.72 | 20 | -14.40 | | | Baim, Elvin | | | 1638 | AZE | 0.50 | 1 | 0.01 | 20 | 0.20 | | | Ayyappan, Santhosh | | | 1594 | USA | 1.00 | 1 | 0.44 | 20 | 8.80 | | | Chen, Alan Zishun | | | 1697 | USA | 0.50 | 1 | 0.09 | 20 | 1.80 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | | | 10th Annual Washington International - Premier | Rockville, MD | USA | 2023-08-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1703 | 1634 | 2.50 | 8 | -0.88 | 20 | -17.60 | |
| | Phadke, Viraj Sharad | | | 1495 | USA | 0.50 | 1 | -0.19 | 20 | -3.80 | | | Diao, Sujia | | | 1671 | USA | 0.50 | 1 | 0.05 | 20 | 1.00 | | | Udovenko, Daniel Alexander | | | 1816 | ENG | 0.50 | 1 | 0.24 | 20 | 4.80 | | | Qian, Bobby | | | 2041 | USA | 0.50 | 1 | 0.42 | 20 | 8.40 | | | Diao, Matthew Guo | | | 1799 | USA | 0.00 | 1 | -0.28 | 20 | -5.60 | | | He, Eden | | | 1656 | USA | 0.00 | 1 | -0.47 | 20 | -9.40 | | | Srinivasan, Sivavishnu | | | 1450 | USA | 0.50 | 1 | -0.24 | 20 | -4.80 | | | Chen, Alan Zishun | | | 1697 | USA | 0.00 | 1 | -0.41 | 20 | -8.20 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | | | 55th annual Atlantic Open - U2100 | Reston, VA | USA | 2023-08-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1441 | 1634 | 2.00 | 4 | -0.90 | 20 | -18.00 | |
| | Murugan Ayyappan, Adhiraiyan | | | 1605 | USA | 0.50 | 1 | -0.04 | 20 | -0.80 | | | Iyer, Vedanth | | | 1389 | USA | 0.50 | 1 | -0.30 | 20 | -6.00 | | | Liu, Christina Grace | | | 1234 * | USA | 0.50 | 1 | -0.42 | 20 | -8.40 | | | Thomas, Nicholas Andrew | | | 1534 | USA | 0.50 | 1 | -0.14 | 20 | -2.80 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | |
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