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Individual Calculations March 2010 |
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| Sevian, Samuel Total change: 25.30 | |   |
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| NorCal Open 2010 | Santa Clara, California | USA | 2010-01-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2247 | 2119 | 2.00 | 5 | 0.36 | 25 | 9.00 | |
|  Zildzic, Kenan | f | | 2244 | BIH | 1.00 | 1 | 0.67 | 25 | 16.75 | | | Liou, Yian | | | 2182 | USA | 0.50 | 1 | 0.09 | 25 | 2.25 | | | Tate, Emory A | m | | 2322 | USA | 0.50 | 1 | 0.26 | 25 | 6.50 | |  Lee, Andy C | | | 2273 | USA | 0.00 | 1 | -0.29 | 25 | -7.25 | | | Aigner, Michael | | | 2212 | USA | 0.00 | 1 | -0.37 | 25 | -9.25 | |
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) | | | | 2010 Century West Open | Los Angeles, California | USA | 2010-01-08 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2250 | 2119 | 1.50 | 4 | 0.13 | 25 | 3.25 | |
| | Peters, Jack | m | | 2381 | USA | 0.00 | 1 | -0.18 | 25 | -4.50 | | | Kudryavtsev, Vadim | | | 2215 | RUS | 0.50 | 1 | 0.13 | 25 | 3.25 | | | Kretchetov, Alexandre | f | | 2393 | RUS | 0.00 | 1 | -0.17 | 25 | -4.25 | | | Odeh, Kenneth | | | 2012 | NGR | 1.00 | 1 | 0.35 | 25 | 8.75 | |
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 | | Golden State Open | Concord, California | USA | 2010-01-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2259 | 2119 | 3.00 | 7 | 0.76 | 15 | 11.40 | |
| | Tate, Emory A | m | | 2322 | USA | 0.00 | 1 | -0.24 | 15 | -3.60 | | | Gallegos, Paul A | | | 2093 | USA | 0.50 | 1 | -0.04 | 15 | -0.60 | | | Kelson, Richard | f | | 2259 | USA | 1.00 | 1 | 0.69 | 15 | 10.35 | | | Zierk, Steven C | f | | 2359 | USA | 0.00 | 1 | -0.20 | 15 | -3.00 | | | Troff, Kayden W | | | 2227 | USA | 0.50 | 1 | 0.15 | 15 | 2.25 | | | Heiserman, Jimmy P | | | 2186 | USA | 1.00 | 1 | 0.59 | 15 | 8.85 | | | Mezentsev, Vladimir | m | | 2367 | RUS | 0.00 | 1 | -0.19 | 15 | -2.85 | |
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 | | 36th Annual Peoples Tournament | Concord, California | USA | 2010-02-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2140 | 2119 | 2.00 | 4 | 0.11 | 15 | 1.65 | |
| | Harmon-Vellotti, Luke | | | 2032 | USA | 1.00 | 1 | 0.38 | 15 | 5.70 | | | Mackenzie, Dana N | | | 2121 | USA | 0.50 | 1 | 0.00 | 15 | 0.00 | | | Shipman, Walter J | m | | 2193 | USA | 0.50 | 1 | 0.10 | 15 | 1.50 | | | Aigner, Michael | | | 2212 | USA | 0.00 | 1 | -0.37 | 15 | -5.55 | |
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) | | |
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