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Individual Calculations July 2009 |
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| Hughes, Devin L Total change: 40.75 | |   |
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| Phillips 66 Chess Classic | Owasso, Oklahoma | USA | 2009-03-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2087 | 2013 | 2.50 | 3 | 1.30 | 25 | 32.50 | |
|  Fernandez, Jaime E | | | 2028 | USA | 1.00 | 1 | 0.52 | 25 | 13.00 | |  Wharry, Stephen M | | | 2071 | USA | 1.00 | 1 | 0.58 | 25 | 14.50 | | | Orton Iii, William | | | 2162 | USA | 0.50 | 1 | 0.20 | 25 | 5.00 | |
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) | | | | 27th North American FIDE Open | Stillwater, Oklahoma | USA | 2009-05-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2085 | 2011 | 2.00 | 4 | 0.33 | 25 | 8.25 | |
| | Zivanic, Marko | m | | 2361 | SRB | 0.00 | 1 | -0.11 | 25 | -2.75 | | | Baumgartner, Chris | | | 1875 | USA | 0.50 | 1 | -0.18 | 25 | -4.50 | | | Wright, Terry | | | 2023 | USA | 1.00 | 1 | 0.52 | 25 | 13.00 | | | Shaun, Graham | | | 2082 | USA | 0.50 | 1 | 0.10 | 25 | 2.50 | |
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) | | |
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