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Individual Calculations February 2018 |
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| Oconnor, Derek Total change: -25.20 | |   |
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| 27th Annual North American Open | Las Vegas, Nevada | USA | 2017-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2251 | 2201 | 4.50 | 9 | 0.51 | 20 | 10.20 | |
|  Moradiabadi, Elshan | g | | 2528 | USA | 0.50 | 1 | 0.37 | 20 | 7.40 | |  Brown, Michael | m | | 2506 | USA | 0.00 | 1 | -0.14 | 20 | -2.80 | | | Narayanan, Samrug | | | 2036 | USA | 1.00 | 1 | 0.28 | 20 | 5.60 | | | Gauri, Shankar | f | | 2345 | IND | 0.50 | 1 | 0.19 | 20 | 3.80 | | | Hong, Andrew | f | | 2327 | USA | 0.00 | 1 | -0.33 | 20 | -6.60 | | | Higashino, Tetsuo | | | 1979 | JPN | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Wang, Jason | c | | 2064 | USA | 1.00 | 1 | 0.32 | 20 | 6.40 | | | Raptis, Nick | f | | 2310 | USA | 0.00 | 1 | -0.35 | 20 | -7.00 | | | Nguyen, Emily | | wm | 2164 | USA | 0.50 | 1 | -0.05 | 20 | -1.00 | |
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) | | | | 9th Annual Golden State Open | Concord, California | USA | 2018-01-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1897 | 2181 | 4.00 | 7 | -1.77 | 20 | -35.40 | |
| | Zhou, Aiden | | | 1906 | CAN | 0.00 | 1 | -0.83 | 20 | -16.60 | | | Sarafian, Greg | | | 1885 | USA | 1.00 | 1 | 0.15 | 20 | 3.00 | | | Wang, Henry | | | 1820 | USA | 0.50 | 1 | -0.40 | 20 | -8.00 | | | Wu, Oliver | | | 1781 * | TPE | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Pan, Kevin | | | 2007 | USA | 0.50 | 1 | -0.23 | 20 | -4.60 | | | Aigner, Michael | | | 2096 | USA | 0.50 | 1 | -0.12 | 20 | -2.40 | | | Li, Eric | c | | 1781 * | USA | 0.50 | 1 | -0.42 | 20 | -8.40 | | | * 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) | | |
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