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Individual Calculations March 2010 |
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| Harmon-Vellotti, Luke Total change: 11.85 | |   |
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| Washington Class Championships Master Section | Redmond, Washington | USA | 2009-11-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2219 | 2029 | 0.50 | 4 | -0.51 | 15 | -7.65 | |
|  Sinanan, Joshua | | | 2249 | USA | 0.00 | 1 | -0.22 | 15 | -3.30 | |  Schill, William | f | | 2229 | USA | 0.00 | 1 | -0.24 | 15 | -3.60 | | | Greninger, Harley | | | 2237 | USA | 0.50 | 1 | 0.27 | 15 | 4.05 | | | Lapid Shafriri, Gil | | | 2159 | USA | 0.00 | 1 | -0.32 | 15 | -4.80 | |
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) | | | | 19th Annual North American Open | Las Vegas, Nevada | USA | 2009-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2177 | 2029 | 3.00 | 5 | 1.44 | 15 | 21.60 | |
| | Belliard, Luis M | | | 2246 | DOM | 0.50 | 1 | 0.28 | 15 | 4.20 | | | Rabin, Evan Z | | | 2021 | USA | 0.50 | 1 | -0.01 | 15 | -0.15 | | | Luaces, Juan | | | 2108 | USA | 1.00 | 1 | 0.61 | 15 | 9.15 | | | Brownscombe, Tom | f | | 2203 | USA | 1.00 | 1 | 0.73 | 15 | 10.95 | | | Riordan, Charles R | f | | 2305 | USA | 0.00 | 1 | -0.17 | 15 | -2.55 | |
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) | | | | Golden State Open | Concord, California | USA | 2010-01-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2210 | 2032 | 2.50 | 6 | 0.83 | 15 | 12.45 | |
| | Lee, Andy C | | | 2273 | USA | 0.00 | 1 | -0.20 | 15 | -3.00 | | | Odondoo, Ganbold | m | | 2346 | MGL | 0.00 | 1 | -0.14 | 15 | -2.10 | | | Kelley, Dereque D | | | 2138 | USA | 1.00 | 1 | 0.64 | 15 | 9.60 | | | Gallegos, Paul A | | | 2093 | USA | 0.00 | 1 | -0.42 | 15 | -6.30 | | | Adelberg, David | | | 2194 | USA | 1.00 | 1 | 0.71 | 15 | 10.65 | | | Kudryavtsev, Vadim | | | 2215 | RUS | 0.50 | 1 | 0.24 | 15 | 3.60 | |
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) | | | | 36th Annual Peoples Tournament | Concord, California | USA | 2010-02-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2165 | 2032 | 0.00 | 3 | -0.97 | 15 | -14.55 | |
| | Liou, Yian | | | 2182 | USA | 0.00 | 1 | -0.30 | 15 | -4.50 | | | Sevian, Samuel | | | 2119 | USA | 0.00 | 1 | -0.38 | 15 | -5.70 | | | Shipman, Walter J | m | | 2193 | USA | 0.00 | 1 | -0.29 | 15 | -4.35 | |
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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