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Individual Calculations July 2019 |
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| Costello, Alexander Total change: -41.20 | |   |
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| 2019 National Open | Las Vegas, Nevada | USA | 2019-06-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2295 | 2297 | 4.50 | 9 | 0.08 | 20 | 1.60 | |
|  De Leon, Carlos | | | 1897 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Li, Ruifeng | g | | 2546 | USA | 0.00 | 1 | -0.19 | 20 | -3.80 | | | Kondakov, Adrian | c | | 2009 | USA | 1.00 | 1 | 0.16 | 20 | 3.20 | | | Shetty, Atulya | m | | 2431 | USA | 0.50 | 1 | 0.18 | 20 | 3.60 | | | Boros, Denes | g | | 2466 | HUN | 0.50 | 1 | 0.22 | 20 | 4.40 | | | Baryshpolets, Andrey | g | | 2574 | UKR | 0.00 | 1 | -0.17 | 20 | -3.40 | | | Huang, Gary | | | 2119 | USA | 1.00 | 1 | 0.27 | 20 | 5.40 | | | Ostrovskiy, Aleksandr | m | | 2437 | USA | 0.00 | 1 | -0.31 | 20 | -6.20 | | | Wu, Logan | | | 2177 | USA | 0.50 | 1 | -0.16 | 20 | -3.20 | | | * 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) | | | | 2019 US Cadet Championship | San Jose, California | USA | 2019-06-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2334 | 2297 | 1.00 | 7 | -2.14 | 20 | -42.80 | |
| | Ke, Ivan | | | 2332 | USA | 0.00 | 1 | -0.45 | 20 | -9.00 | | | Hong, Andrew Zhang | m | | 2414 | USA | 0.00 | 1 | -0.34 | 20 | -6.80 | | | Wang, Justin | m | | 2444 | USA | 0.00 | 1 | -0.30 | 20 | -6.00 | | | Niemann, Hans Moke | m | | 2460 | USA | 0.00 | 1 | -0.28 | 20 | -5.60 | | | Wu, Rochelle | | wm | 2184 | USA | 1.00 | 1 | 0.35 | 20 | 7.00 | | | Shlyakhtenko, Robert | c | | 2206 | USA | 0.00 | 1 | -0.62 | 20 | -12.40 | | | Stearman, Josiah Paul | f | | 2297 | USA | 0.00 | 1 | -0.50 | 20 | -10.00 | |
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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