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Individual Calculations February 2020 |
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| Costello, Alexander John Total change: -23.00 | |   |
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| 29th Annual North American Open | Las Vegas, Nevada | USA | 2019-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2208 | 2292 | 4.50 | 9 | -0.91 | 20 | -18.20 | |
|  Shawkat, Saif | | | 1954 | USA | 1.00 | 1 | 0.12 | 20 | 2.40 | |  Maiti, Milind | | | 1971 | USA | 1.00 | 1 | 0.13 | 20 | 2.60 | | | Omori, Michael | | | 2112 | USA | 1.00 | 1 | 0.26 | 20 | 5.20 | | | Gabuzyan, Hovhannes | g | | 2610 | ARM | 0.00 | 1 | -0.13 | 20 | -2.60 | | | Bryant, John Daniel | m | | 2422 | USA | 0.00 | 1 | -0.32 | 20 | -6.40 | | | Li, Hanxiang | | | 2095 | CHN | 1.00 | 1 | 0.25 | 20 | 5.00 | | | Paragua, Mark | g | | 2513 | PHI | 0.00 | 1 | -0.22 | 20 | -4.40 | | | Pan, Kevin | | | 2062 | USA | 0.50 | 1 | -0.29 | 20 | -5.80 | | | Lee, Megan | | wm | 2133 | USA | 0.00 | 1 | -0.71 | 20 | -14.20 | |
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) | | | | 6th Annual Dreaming King Open | San Diego, California | USA | 2020-01-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2088 | 2292 | 3.50 | 5 | -0.24 | 20 | -4.80 | |
| | Soong, Danny | | | 1961 | USA | 1.00 | 1 | 0.12 | 20 | 2.40 | | | Lu, Ming | | | 2022 | USA | 1.00 | 1 | 0.17 | 20 | 3.40 | | | Xia, Brandon Yang | c | | 2081 | USA | 1.00 | 1 | 0.23 | 20 | 4.60 | | | Sethuraman, Sandeep | | | 2067 | USA | 0.50 | 1 | -0.28 | 20 | -5.60 | | | Shlyakhtenko, Robert | f | | 2309 | USA | 0.00 | 1 | -0.48 | 20 | -9.60 | |
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) | | |
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