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Individual Calculations September 2009 |
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| Castaneda, Nelson Total change: 15.45 | |   |
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| 2009 Chesapeake Open | Baltimore, Maryland | USA | 2009-06-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2229 | 2282 | 1.50 | 3 | -0.19 | 15 | -2.85 | |
|  Enkhbat, Tegshsuren | m | | 2377 | USA | 0.00 | 1 | -0.37 | 15 | -5.55 | | | Pinkerton, James C | | | 2049 | USA | 1.00 | 1 | 0.21 | 15 | 3.15 | |  Zimmer, Ralph | f | | 2261 | USA | 0.50 | 1 | -0.03 | 15 | -0.45 | |
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) | | | | 14th Annual Bradley Open | Windsor Locks, Connecticut | USA | 2009-07-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2123 | 2282 | 1.50 | 2 | 0.08 | 15 | 1.20 | |
| | Schwartz, Maxwell | | | 2116 | USA | 1.00 | 1 | 0.28 | 15 | 4.20 | | | Zheng, Haotian | | | 2129 | USA | 0.50 | 1 | -0.20 | 15 | -3.00 | |
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) | | | | 110th Annual US Open | Indianapolis, Indiana | USA | 2009-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2122 | 2282 | 4.50 | 6 | 0.36 | 15 | 5.40 | |
| | Danlag, Donald M | | | 2074 | USA | 1.00 | 1 | 0.23 | 15 | 3.45 | | | Adams, Nicholas | | | 2211 | USA | 0.50 | 1 | -0.10 | 15 | -1.50 | | | Hollinberger, Drew | | | 1960 | USA | 1.00 | 1 | 0.13 | 15 | 1.95 | | | Huang, Vincent | | | 2063 | USA | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Kraai, Jesse | g | | 2498 | USA | 0.00 | 1 | -0.22 | 15 | -3.30 | | | Auger, Michael W | | | 1923 | USA | 1.00 | 1 | 0.10 | 15 | 1.50 | |
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) | | | | 39th Annual Continental Open | Sturbridge, Massachusetts | USA | 2009-08-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2214 | 2282 | 2.50 | 3 | 0.78 | 15 | 11.70 | |
| | Ivanov, Alexander | g | | 2527 | USA | 0.50 | 1 | 0.30 | 15 | 4.50 | | | Chiang, Michael | | | 1927 | USA | 1.00 | 1 | 0.11 | 15 | 1.65 | | | Iwu, Okechukwu A | | | 2189 | USA | 1.00 | 1 | 0.37 | 15 | 5.55 | |
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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