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Individual Calculations January 2023 |
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| Preotu, Razvan Total change: -15.30 | |   |
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| 57th American Open | Orange, CA | USA | 2022-11-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2318 | 2493 | 5.50 | 8 | -0.05 | 10 | -0.50 | |
|  Qin, Vincent | | | 2093 * | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | |  Chen, Jonathan | f | | 2193 | USA | 0.50 | 1 | -0.35 | 10 | -3.50 | | | Wang, Alex Yuxuan | | | 2049 | USA | 1.00 | 1 | 0.06 | 10 | 0.60 | | | Mikaelyan, Arman | g | | 2556 | ARM | 1.00 | 1 | 0.59 | 10 | 5.90 | | | Grabinsky, Aaron | m | | 2415 | USA | 1.00 | 1 | 0.39 | 10 | 3.90 | | | Vidyarthi, Vyom | m | | 2402 | USA | 0.50 | 1 | -0.12 | 10 | -1.20 | | | Shlyakhtenko, Robert | m | | 2432 | USA | 0.50 | 1 | -0.08 | 10 | -0.80 | | | Bryant, John D | m | | 2407 | USA | 0.00 | 1 | -0.62 | 10 | -6.20 | | | * 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) | | | | 2022 SPICE Cup Open | Chesterfield, MO | USA | 2022-12-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2267 | 2493 | 5.50 | 9 | -1.48 | 10 | -14.80 | |
| | Johnson, Donald | f | | 2232 | USA | 0.00 | 1 | -0.82 | 10 | -8.20 | | | Yim, Sungho | | | 2243 | KOR | 1.00 | 1 | 0.19 | 10 | 1.90 | | | Plotkin, Victor | f | | 2249 | CAN | 1.00 | 1 | 0.20 | 10 | 2.00 | | | Abrahamyan, Tatev | | wg | 2312 | USA | 0.50 | 1 | -0.24 | 10 | -2.40 | | | Kavutskiy, Kostya | m | | 2387 | USA | 0.50 | 1 | -0.14 | 10 | -1.40 | | | Paul, Justin | f | | 2297 | USA | 0.50 | 1 | -0.25 | 10 | -2.50 | | | Colas, Joshua | f | | 2228 | USA | 0.50 | 1 | -0.32 | 10 | -3.20 | | | Park, Evan | m | | 2362 | USA | 0.50 | 1 | -0.18 | 10 | -1.80 | | | Fishbein, Mitch | | | 2093 * | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | | | * 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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