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Individual Calculations July 2018 |
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| Ruck, Robert Total change: -3.20 | |   |
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| 2018 National Open | Las Vegas, Nevada | USA | 2018-06-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2270 | 2505 | 2.00 | 3 | -0.32 | 10 | -3.20 | |
|  Costello, Alexander John | | | 2150 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | |  Davidson, Kevin | | | 2210 | USA | 1.00 | 1 | 0.15 | 10 | 1.50 | | | Bitoon, Richard Balansag | g | | 2450 | PHI | 0.00 | 1 | -0.58 | 10 | -5.80 | |
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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