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Individual Calculations February 2013 |
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| Zimmer, Ralph Patrick Total change: 12.75 | |   |
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| 39th Annual Eastern Open | Washington DC | USA | 2012-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2255 | 2187 | 2.00 | 4 | 0.32 | 15 | 4.80 | |
|  Defibaugh, Jared | | | 2291 | USA | 0.50 | 1 | 0.14 | 15 | 2.10 | |  Samuelson, Andrew | | | 2198 | USA | 0.00 | 1 | -0.48 | 15 | -7.20 | | | McNamara, Tanner A | | | 2057 | USA | 1.00 | 1 | 0.32 | 15 | 4.80 | | | Ludwig, Daniel J | m | | 2472 | USA | 0.50 | 1 | 0.34 | 15 | 5.10 | |
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) | | | | 5th Annual Chesapeake Open | Gaithersburg, Maryland | USA | 2013-01-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2137 | 2187 | 2.00 | 3 | 0.30 | 15 | 4.50 | |
| | Rodan, Elan Boke | | | 2029 | USA | 1.00 | 1 | 0.29 | 15 | 4.35 | | | Defibaugh, Jared | | | 2291 | USA | 0.00 | 1 | -0.36 | 15 | -5.40 | | | Sherman, David | | | 2092 | USA | 1.00 | 1 | 0.37 | 15 | 5.55 | |
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) | | | | 45th Annual Liberty Bell Open - Open Section | Philadelphia, Pennsylvania | USA | 2013-01-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2271 | 2187 | 1.00 | 2 | 0.23 | 15 | 3.45 | |
| | Katz, Alexander Ross | | | 2250 | USA | 1.00 | 1 | 0.59 | 15 | 8.85 | | | Defibaugh, Jared E | | | 2291 | USA | 0.00 | 1 | -0.36 | 15 | -5.40 | |
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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