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Individual Calculations February 2019 |
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| Oconnor, Derek Total change: -10.00 | |   |
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| 28th Annual North American Open | Las Vegas, Nevada | USA | 2018-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2156 | 2248 | 5.00 | 9 | -0.44 | 20 | -8.80 | |
|  Del Rosario, Frisco | | | 1848 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Pakleza, Zbigniew | g | | 2506 | POL | 0.00 | 1 | -0.18 | 20 | -3.60 | | | Li, Eric | c | | 2045 | USA | 0.00 | 1 | -0.76 | 20 | -15.20 | | | Lundstrom, Brad | | | 1967 | USA | 1.00 | 1 | 0.16 | 20 | 3.20 | | | McNeill, Gordon | | | 2012 | USA | 0.50 | 1 | -0.30 | 20 | -6.00 | | | Baradaran, Arman | | | 2074 | USA | 1.00 | 1 | 0.27 | 20 | 5.40 | | | Shen, Christopher | f | | 2311 | USA | 0.50 | 1 | 0.09 | 20 | 1.80 | | | Wang, Tianqi | | | 2329 | USA | 0.50 | 1 | 0.11 | 20 | 2.20 | | | Martin Del Campo C., Roberto | m | | 2313 | MEX | 0.50 | 1 | 0.09 | 20 | 1.80 | | | * 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) | | | | Bay Area International | Burlingame, California | USA | 2019-01-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2271 | 2275 | 4.00 | 9 | -0.48 | 20 | -9.60 | |
| | Brown, Michael William | m | | 2524 | USA | 0.50 | 1 | 0.31 | 20 | 6.20 | | | Venkataraman, Karthik | g | | 2515 | IND | 0.50 | 1 | 0.30 | 20 | 6.00 | | | Ostrovskiy, Aleksandr | m | | 2439 | USA | 0.00 | 1 | -0.28 | 20 | -5.60 | | | Harazinska, Ewa | | wm | 2222 | POL | 0.50 | 1 | -0.07 | 20 | -1.40 | | | Korley, Kassa | m | | 2450 | DEN | 0.00 | 1 | -0.27 | 20 | -5.40 | | | Jones, Craig | | | 2138 | USA | 1.00 | 1 | 0.32 | 20 | 6.40 | | | Yanayt, Eugene | f | | 2142 | USA | 0.00 | 1 | -0.68 | 20 | -13.60 | | | Kumar, Naman | | | 1875 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Kung, Thomas | | | 2133 | USA | 0.50 | 1 | -0.19 | 20 | -3.80 | | | * 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) | | | | 2019 Berkeley Open | Berkeley, California | USA | 2019-01-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2099 | 2275 | 2.50 | 3 | 0.42 | 20 | 8.40 | |
| | Lee, Addison | | | 1960 | USA | 0.50 | 1 | -0.36 | 20 | -7.20 | | | Kim, Isaiah | | | 1962 | USA | 1.00 | 1 | 0.14 | 20 | 2.80 | | | Jirasek, Ladia | f | | 2376 | USA | 1.00 | 1 | 0.64 | 20 | 12.80 | |
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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