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Individual Calculations September 2009 |
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| Parry, Matt J Total change: -17.70 | |   |
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| 37th Annual World Open - Under 2400 Section | Philadelphia, Pennsylvania | USA | 2009-06-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2085 | 2229 | 3.00 | 6 | -1.03 | 15 | -15.45 | |
|  Jayakumar, Adarsh | | | 1917 | USA | 0.50 | 1 | -0.36 | 15 | -5.40 | | | Iwu, Okechukwu A | | | 2198 | USA | 0.00 | 1 | -0.54 | 15 | -8.10 | |  Wright, William B | | | 2186 | USA | 0.50 | 1 | -0.06 | 15 | -0.90 | | | Fink Jr, Stanley W | | | 2148 | USA | 1.00 | 1 | 0.39 | 15 | 5.85 | | | Filipovich, David | | | 2181 | CAN | 0.50 | 1 | -0.07 | 15 | -1.05 | | | Hua, David A | | | 1879 | USA | 0.50 | 1 | -0.39 | 15 | -5.85 | |
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 |
| 2139 | 2219 | 3.50 | 6 | -0.15 | 15 | -2.25 | |
| | Ballom, Stephanie | | | 1939 | USA | 1.00 | 1 | 0.16 | 15 | 2.40 | | | Rogers, Bradley K | | | 2101 | USA | 0.50 | 1 | -0.16 | 15 | -2.40 | | | Hortillosa, Andres | | | 2115 | USA | 0.50 | 1 | -0.14 | 15 | -2.10 | | | Ng, Andrew | | | 2113 | USA | 0.50 | 1 | -0.14 | 15 | -2.10 | | | Tuhrim, Richard J | | | 2042 | USA | 1.00 | 1 | 0.27 | 15 | 4.05 | | | Mitkov, Nikola | g | | 2526 | MKD | 0.00 | 1 | -0.14 | 15 | -2.10 | |
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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