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Individual Calculations July 2008 |
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| Bonin, Jay Total change: 16.80 | |   |
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| World Amateur Team | Parsippany, New Jersey USA | USA | 2008-02-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2088 | 2351 | 1.50 | 2 | -0.14 | 10 | -1.40 | |
|  Meredith, Matthew | | | 2055 | USA | 1.00 | 1 | 0.15 | 10 | 1.50 | | | Hall, Timothy | | | 2120 | USA | 0.50 | 1 | -0.29 | 10 | -2.90 | |
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) | | | | 10th Annual Foxwoods Open | Mashantucket, Connecticut | USA | 2008-03-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2393 | 2351 | 5.50 | 8 | 1.96 | 10 | 19.60 | |
| | Bierkens, Pieter | | | 2178 | USA | 1.00 | 1 | 0.27 | 10 | 2.70 | |  Waidyaratne, Kasun | | | 2109 | USA | 0.50 | 1 | -0.30 | 10 | -3.00 | | | Friedel, Joshua | m | | 2487 | USA | 0.50 | 1 | 0.18 | 10 | 1.80 | | | Stripunsky, Alexander | g | | 2570 | USA | 0.50 | 1 | 0.28 | 10 | 2.80 | | | Lenderman, Alex | m | | 2427 | USA | 1.00 | 1 | 0.60 | 10 | 6.00 | | | Ippolito, Dean | m | | 2417 | USA | 0.50 | 1 | 0.09 | 10 | 0.90 | | | Vigorito, David | m | | 2406 | USA | 1.00 | 1 | 0.58 | 10 | 5.80 | | | Perelshteyn, Eugene | g | | 2551 | USA | 0.50 | 1 | 0.26 | 10 | 2.60 | |
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) | | | | 2008 Frank K Berry U.S. Championship - Qualifier Fide Open | Tulsa, Oklahoma | USA | 2008-03-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2406 | 2351 | 2.50 | 5 | 0.36 | 10 | 3.60 | |
| | Fedorowicz, John | g | | 2470 | USA | 0.50 | 1 | 0.16 | 10 | 1.60 | | | Pruess, David | m | | 2431 | USA | 0.50 | 1 | 0.11 | 10 | 1.10 | | | Ludwig, Daniel | | | 2357 | USA | 0.50 | 1 | 0.01 | 10 | 0.10 | | | Becerra, Julio | g | | 2573 | USA | 0.00 | 1 | -0.22 | 10 | -2.20 | | | Karagianis, Pete | | | 2201 | USA | 1.00 | 1 | 0.30 | 10 | 3.00 | |
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) | | | | New York April Open | New York, NY | USA | 2008-04-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2196 | 2368 | 1.00 | 2 | -0.43 | 10 | -4.30 | |
| | Korley, Kassa | | | 2095 | USA | 1.00 | 1 | 0.17 | 10 | 1.70 | | | Shankland, Samuel L | | | 2296 | USA | 0.00 | 1 | -0.60 | 10 | -6.00 | |
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) | | | | NY May Open | New York, NY | USA | 2008-05-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2154 | 2368 | 3.00 | 4 | -0.07 | 10 | -0.70 | |
| | Berg, George P | | | 2115 | USA | 0.50 | 1 | -0.31 | 10 | -3.10 | | | Ostrovskiy, Aleksandr | c | | 2074 | USA | 1.00 | 1 | 0.15 | 10 | 1.50 | | | West, James R | | | 2219 | USA | 1.00 | 1 | 0.30 | 10 | 3.00 | | | Treger, Yefim | | | 2207 | USA | 0.50 | 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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