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Individual Calculations October 2017 |
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| Roberts, Rohan Total change: -35.60 | |   |
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| St. Jago Open 2017 [Open] | Spanish Town | JAM | 2017-09-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1673 | 1698 | 1.50 | 5 | -1.19 | 40 | -47.60 | |
|  Christie, Joshua | | | 1982 | JAM | 0.00 | 1 | -0.16 | 40 | -6.40 | |  Belinfante, Nathan | | | 1667 | JAM | 0.00 | 1 | -0.54 | 40 | -21.60 | | | Ellis, Rahjay | | | 1606 | JAM | 0.50 | 1 | -0.13 | 40 | -5.20 | | | Smith, Melisha | | wc | 1671 | JAM | 0.00 | 1 | -0.54 | 40 | -21.60 | | | Walker, Gayon | | | 1439 | JAM | 1.00 | 1 | 0.18 | 40 | 7.20 | |
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) | | | | Harold Chan Open 2017 | Kingston | JAM | 2017-09-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1666 | 1698 | 2.50 | 4 | 0.30 | 40 | 12.00 | |
| | Rampair, Aidan | | | 1354 | JAM | 1.00 | 1 | 0.12 | 40 | 4.80 | | | Mellace, Andrew | | | 2098 * | JAM | 0.00 | 1 | -0.08 | 40 | -3.20 | | | McKoy, Troy | | | 1553 | JAM | 0.50 | 1 | -0.19 | 40 | -7.60 | | | Bain, Emile | | | 1660 | JAM | 1.00 | 1 | 0.45 | 40 | 18.00 | | | * 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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