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Individual Calculations September 2023 |
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| Johnston, Daniel F Total change: -30.80 | |   |
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| May-July 2023 Marshall Monday | New York, NY | USA | 2023-05-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1850 | 2041 | 1.50 | 3 | -0.63 | 20 | -12.60 | |
|  Rudowski, Szymon | | | 1808 | USA | 1.00 | 1 | 0.21 | 20 | 4.20 | |  Ruiz, Alberto Arnedo | | | 2102 | ESP | 0.00 | 1 | -0.42 | 20 | -8.40 | | | Wong, Wyatt | | | 1641 * | USA | 0.50 | 1 | -0.42 | 20 | -8.40 | | | * 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) | | | | June 2023 Marshall Premier | New York, NY | USA | 2023-06-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1876 | 2036 | 3.00 | 4 | 0.18 | 20 | 3.60 | |
| | Rand, Steven | | | 1982 | USA | 0.50 | 1 | -0.08 | 20 | -1.60 | | | Kozower, Ethan | | | 1829 | USA | 0.50 | 1 | -0.27 | 20 | -5.40 | | | Marsh, James | | | 1942 | USA | 1.00 | 1 | 0.37 | 20 | 7.40 | | | Mansurov, Yusuf | | | 1750 | USA | 1.00 | 1 | 0.16 | 20 | 3.20 | |
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) | | | | July 2023 Marshall Premier | New York, NY | USA | 2023-07-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1890 | 2036 | 1.50 | 3 | -0.58 | 20 | -11.60 | |
| | Hass, Kevin | | | 1934 | USA | 0.50 | 1 | -0.14 | 20 | -2.80 | | | Arthur, Brian | | | 1834 | USA | 0.50 | 1 | -0.26 | 20 | -5.20 | | | Hoffman, Luc | | | 1902 | USA | 0.50 | 1 | -0.18 | 20 | -3.60 | |
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) | | | | July-August 2023 Marshall Monday Rounds 1-3 | New York, NY | USA | 2023-07-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1916 | 2036 | 2.50 | 3 | 0.51 | 20 | 10.20 | |
| | Solomon, Ciprian | | | 1966 | USA | 1.00 | 1 | 0.40 | 20 | 8.00 | | | Modi, Ethan | | | 1869 | USA | 0.50 | 1 | -0.22 | 20 | -4.40 | | | Kozower, Ethan | | | 1914 | USA | 1.00 | 1 | 0.33 | 20 | 6.60 | |
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) | | | | July-August 2023 Marshall Monday Rounds 4-6 | New York, NY | USA | 2023-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2005 | 2036 | 1.00 | 3 | -0.62 | 20 | -12.40 | |
| | Meduri, Aakaash | | | 2004 | USA | 0.00 | 1 | -0.54 | 20 | -10.80 | | | Klein, Ethan | | | 1930 | USA | 1.00 | 1 | 0.36 | 20 | 7.20 | | | Ruiz, Alberto Arnedo | | | 2081 | ESP | 0.00 | 1 | -0.44 | 20 | -8.80 | |
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) | | | | August 2023 Marshall Premier | New York, NY | USA | 2023-08-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1899 | 2036 | 3.00 | 5 | -0.40 | 20 | -8.00 | |
| | Berg, George | | | 1789 | USA | 0.50 | 1 | -0.31 | 20 | -6.20 | | | Miller, Rachel | c | wm | 1887 | JAM | 1.00 | 1 | 0.30 | 20 | 6.00 | | | Rand, Steven | | | 1991 | USA | 0.50 | 1 | -0.06 | 20 | -1.20 | | | Li, Michael | | | 1937 | USA | 0.50 | 1 | -0.14 | 20 | -2.80 | | | Chen, Derek Li | | | 1891 | USA | 0.50 | 1 | -0.19 | 20 | -3.80 | |
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) | | |
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