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Individual Calculations September 2011 |
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| Roback, Joe Total change: 0.00 | |   |
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| Portland Chess Club Centennial Open | Portland, Oregon | USA | 2011-08-12 |
| Rc | Ro | w | n | change | Rp | K | K*chg | Game |
| 2102 | 0 | 1.50 | 6 | 0.00 | 1909 | | 0.00 | |
|  Feng, Roland | | | 2019 | USA | 1.00 | 1 | 0.00 | | 0.00 | |  Sinanan, Joshua C | | | 2273 | USA | 0.00 | 1 | 0.00 | | 0.00 | | | Ummel, Igor | | | 2082 | USA | 0.50 | 1 | 0.00 | | 0.00 | | | Lee, Nathan Y | | | 2115 | USA | 0.00 | 1 | 0.00 | | 0.00 | | | Sen, Samir | | | 2128 | USA | 0.00 | 1 | 0.00 | | 0.00 | | | Aiello, Roberto | | | 1992 | USA | 0.00 | 1 | 0.00 | | 0.00 | |
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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