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Individual Calculations September 2013 |
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| Chang, Jeffrey E Total change: 17.10 | |   |
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| 3rd Annual Potomac Open | Rockville, Maryland | USA | 2013-08-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2269 | 1994 | 2.00 | 4 | 1.25 | 15 | 18.75 | |
|  Kaufman, Lawrence | g | | 2332 | USA | 0.50 | 1 | 0.38 | 15 | 5.70 | |  Foisor, Sabina | | wg | 2271 | USA | 0.50 | 1 | 0.33 | 15 | 4.95 | | | Kekelidze, Mikheil | g | | 2394 * | GEO | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Ding, Andrew | | | 2080 | USA | 1.00 | 1 | 0.62 | 15 | 9.30 | | | * 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) | | | | 45th Annual Atlantic Open | Washington DC | USA | 2013-08-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2077 | 1994 | 1.50 | 4 | -0.11 | 15 | -1.65 | |
| | Goldenberg, Ryan D | | | 2271 | USA | 0.50 | 1 | 0.33 | 15 | 4.95 | | | Cao, Alvin | | | 1949 | USA | 1.00 | 1 | 0.44 | 15 | 6.60 | | | Petesch, Gabriel N | | | 2196 | USA | 0.00 | 1 | -0.24 | 15 | -3.60 | | | Kostovetsky, Daniel | | | 1893 | USA | 0.00 | 1 | -0.64 | 15 | -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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