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Individual Calculations May 2011 |
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| Winter-Roach, Alex Total change: 12.90 | |   |
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| Trinidad and Tobago 1st Preliminary National Championship Open 2010 | Arima | TRI | 2010-03-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2052 | 2062 | 2.00 | 5 | -0.55 | 15 | -8.25 | |
|  Ramadhar, Kishore | | | 2064 | TRI | 1.00 | 1 | 0.50 | 15 | 7.50 | | | Harper, Ryan | f | | 2262 | TRI | 0.00 | 1 | -0.24 | 15 | -3.60 | |  Cabralis, Keron | | | 2116 | TRI | 1.00 | 1 | 0.58 | 15 | 8.70 | | | Singh, Vishnu | | | 1964 | TRI | 0.00 | 1 | -0.63 | 15 | -9.45 | | | Lee, Hayden | | | 1856 | TRI | 0.00 | 1 | -0.76 | 15 | -11.40 | |
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) | | | | Trinidad and Tobago National Open Championship 2010 | Port of Spain | TRI | 2010-11-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2042 | 2052 | 7.00 | 11 | 1.39 | 15 | 20.85 | |
| | Johnson, Joshua | | | 1822 | TRI | 1.00 | 1 | 0.21 | 15 | 3.15 | | | Joseph, Marcus | | | 2125 | TRI | 0.50 | 1 | 0.10 | 15 | 1.50 | | | Singh, Ravishen | | | 2101 | TRI | 1.00 | 1 | 0.57 | 15 | 8.55 | | | Bowles, Andrew | | | 1879 | TRI | 0.50 | 1 | -0.23 | 15 | -3.45 | | | Chang, Eddison Dr. | | | 2036 | TRI | 0.50 | 1 | -0.02 | 15 | -0.30 | | | Paul, Jayson | | | 1961 | TRI | 1.00 | 1 | 0.38 | 15 | 5.70 | | | Singh, Vishnu | | | 1962 | TRI | 0.50 | 1 | -0.12 | 15 | -1.80 | | | Harper, Ryan | f | | 2235 | TRI | 0.00 | 1 | -0.26 | 15 | -3.90 | | | Merritt, Mario | f | | 2094 | TRI | 1.00 | 1 | 0.56 | 15 | 8.40 | | | Christopher, David | | | 2072 | TRI | 1.00 | 1 | 0.53 | 15 | 7.95 | | | Cabralis, Keron | f | | 2176 | TRI | 0.00 | 1 | -0.33 | 15 | -4.95 | |
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) | | | | Trinidad and Tobago 2nd Preliminary Championship Open 2011 | Arima | TRI | 2011-04-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2000 | 2061 | 3.50 | 6 | 0.02 | 15 | 0.30 | |
| | Bowles, Andrew | | | 1935 | TRI | 1.00 | 1 | 0.33 | 15 | 4.95 | | | Duncan, Leonard | | | 2000 | TRI | 1.00 | 1 | 0.42 | 15 | 6.30 | | | Singh, Vishnu | | | 1964 | TRI | 1.00 | 1 | 0.37 | 15 | 5.55 | | | Yee, Frank | f | | 2090 | TRI | 0.50 | 1 | 0.04 | 15 | 0.60 | | | Perryman, Sean | | | 2088 | TRI | 0.00 | 1 | -0.46 | 15 | -6.90 | | | Raphael, Christopher | | | 1924 | TRI | 0.00 | 1 | -0.68 | 15 | -10.20 | |
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) | | |
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