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Individual Calculations May 2015 |
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| Cummings, David Total change: -3.40 | |   |
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| 9th Annual Philadelphia Open | Philadelphia, Pennsylvania | USA | 2015-04-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2223 | 2340 | 5.50 | 9 | -0.34 | 10 | -3.40 | |
|  Der Manuelian, Haik Oliver | | | 2113 | USA | 0.00 | 1 | -0.79 | 10 | -7.90 | |  Li, Ben | | | 2106 | USA | 1.00 | 1 | 0.21 | 10 | 2.10 | | | Zhang, Chao | | | 2139 | USA | 1.00 | 1 | 0.24 | 10 | 2.40 | | | Margvelashvili, George | g | | 2539 | GEO | 0.00 | 1 | -0.24 | 10 | -2.40 | | | Furfine, Jacob | | | 2169 | USA | 0.50 | 1 | -0.23 | 10 | -2.30 | | | Markzon, Gregory | f | | 2155 | USA | 1.00 | 1 | 0.26 | 10 | 2.60 | | | Jacobson, Aaron | | | 2127 | USA | 1.00 | 1 | 0.23 | 10 | 2.30 | | | Wang, Qibiao | | | 2206 | CHN | 0.50 | 1 | -0.18 | 10 | -1.80 | | | Rohde, Michael A | g | | 2457 | USA | 0.50 | 1 | 0.16 | 10 | 1.60 | |
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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