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Individual Calculations May 2010 |
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| Kaufman, Lawrence Total change: 7.30 | |   |
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| 42nd Annual Virginia Open | McLean, Virginia | USA | 2010-03-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2144 | 2406 | 4.50 | 5 | 0.46 | 10 | 4.60 | |
|  Khojandi, Aryan | | | 2006 * | USA | 0.50 | 1 | -0.42 | 10 | -4.20 | |  Cohen, Harry S | | | 2096 | USA | 1.00 | 1 | 0.14 | 10 | 1.40 | | | Stancil, Kimani A | | | 2116 | USA | 1.00 | 1 | 0.16 | 10 | 1.60 | | | Shibut, Macon A | f | | 2234 | USA | 1.00 | 1 | 0.27 | 10 | 2.70 | | | Gorman, Dov | f | | 2266 | USA | 1.00 | 1 | 0.31 | 10 | 3.10 | | | * 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) | | | | 50th Maryland Open | Rockville, Maryland | USA | 2010-04-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2251 | 2406 | 3.00 | 4 | 0.27 | 10 | 2.70 | |
| | Hutchinson, Antoin | | | 2172 | USA | 1.00 | 1 | 0.21 | 10 | 2.10 | | | Erenburg, Sergey | g | | 2580 | ISR | 0.00 | 1 | -0.27 | 10 | -2.70 | | | Collier, Philip M | | | 2071 | USA | 1.00 | 1 | 0.12 | 10 | 1.20 | | | Samuelson, Andrew | | | 2179 | USA | 1.00 | 1 | 0.21 | 10 | 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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