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Individual Calculations May 2013 |
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| Vigorito, David Total change: -8.30 | |   |
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| 43rd Annual World Amateur Team & US Team East | Parsippany, New Jersey | USA | 2013-02-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2302 | 2437 | 3.00 | 5 | -0.35 | 10 | -3.50 | |
|  Salman, Joel | f | | 2166 | USA | 1.00 | 1 | 0.17 | 10 | 1.70 | |  Milovanovic, Dragan | | | 2208 | SRB | 1.00 | 1 | 0.21 | 10 | 2.10 | | | Christiansen, Larry | g | | 2577 | USA | 0.00 | 1 | -0.31 | 10 | -3.10 | | | Bonin, Jay Richard | m | | 2304 | USA | 0.00 | 1 | -0.68 | 10 | -6.80 | | | Feldman, Yevgeny | | | 2255 | USA | 1.00 | 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) | | | | 7th Annual Philadelphia Open - Master Section | Philadelphia, Pennsylvania | USA | 2013-03-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2354 | 2437 | 4.50 | 9 | -0.95 | 10 | -9.50 | |
| | Barnett, Alex | | | 2214 | USA | 1.00 | 1 | 0.22 | 10 | 2.20 | | | Lenderman, Aleksandr | g | | 2601 | USA | 1.00 | 1 | 0.72 | 10 | 7.20 | | | Van Kampen, Robin | g | | 2592 | NED | 0.50 | 1 | 0.21 | 10 | 2.10 | | | Kreiman, Boris | g | | 2482 | USA | 0.00 | 1 | -0.44 | 10 | -4.40 | | | Jayakumar, Adarsh | f | | 2294 | USA | 0.00 | 1 | -0.69 | 10 | -6.90 | | | Balasubramanian, Adithya | | | 2253 | IND | 0.00 | 1 | -0.74 | 10 | -7.40 | | | Song, Michael | | | 2189 | CAN | 1.00 | 1 | 0.19 | 10 | 1.90 | | | Mo, Kevin | | | 2282 | USA | 0.50 | 1 | -0.21 | 10 | -2.10 | | | Wang, Kevin | | | 2276 | 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) | | | | 2013 Saco Open | Saco, Maine | USA | 2013-04-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2197 | 2437 | 3.50 | 4 | 0.47 | 10 | 4.70 | |
| | Christiansen, Natasha | | wc | 2037 * | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Bryan, Jarod J | f | | 2187 | USA | 1.00 | 1 | 0.19 | 10 | 1.90 | | | Ivanov, Alexander | g | | 2528 | USA | 0.50 | 1 | 0.12 | 10 | 1.20 | | | Fishbein, Matthew | | | 2037 * | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | | | * 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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