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Individual Calculations September 2011 |
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| Thomas, Peter Total change: 25.20 | |   |
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| Robert Wheeler Open | Kingston | JAM | 2011-05-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1982 | 1978 | 2.00 | 4 | 0.01 | 30 | 0.30 | |
|  Porter, Russel | c | | 2140 | JAM | 0.00 | 1 | -0.29 | 30 | -8.70 | |  Henry, Mark | | | 1831 | JAM | 1.00 | 1 | 0.30 | 30 | 9.00 | | | Ramsay, Zachary | | | 1958 | JAM | 1.00 | 1 | 0.47 | 30 | 14.10 | | | Mellace, Andrew | | | 1998 | JAM | 0.00 | 1 | -0.47 | 30 | -14.10 | |
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) | | | | St. Jago Open "Elite" | Spanish Town | JAM | 2011-07-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2125 | 1991 | 2.00 | 4 | 0.70 | 30 | 21.00 | |
| | Porter, Russel | c | | 2140 | JAM | 0.50 | 1 | 0.20 | 30 | 6.00 | | | Porter, Russel | c | | 2140 | JAM | 1.00 | 1 | 0.70 | 30 | 21.00 | | | Richards, Deborah | | wf | 1998 | JAM | 0.50 | 1 | 0.01 | 30 | 0.30 | | | Matthews, Shane | f | | 2221 | JAM | 0.00 | 1 | -0.21 | 30 | -6.30 | |
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) | | | NOTE: K factor changed | | National Championship 2011 | Kingston | JAM | 2011-07-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1967 | 1991 | 4.00 | 7 | 0.26 | 15 | 3.90 | |
| | Myers, Peter | | | 2059 | JAM | 0.50 | 1 | 0.09 | 15 | 1.35 | | | Davy, Damion | | | 2023 | JAM | 0.50 | 1 | 0.04 | 15 | 0.60 | | | Henry, Mark | | | 1831 | JAM | 0.00 | 1 | -0.71 | 15 | -10.65 | | | Brooks, Paul | | | 1928 | JAM | 1.00 | 1 | 0.41 | 15 | 6.15 | | | Mellace, Andrew | | | 1998 | JAM | 0.50 | 1 | 0.01 | 15 | 0.15 | | | Holness, Mark | c | | 1998 | JAM | 0.50 | 1 | 0.01 | 15 | 0.15 | | | Wilkinson, Ian | | | 1929 | JAM | 1.00 | 1 | 0.41 | 15 | 6.15 | |
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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