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Individual Calculations January 2010 |
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| Zierk, Steven C Total change: 52.95 | |   |
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| 27th Annual Sands Regency - Western States Open | Reno, Nevada | USA | 2009-10-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2468 | 2303 | 4.00 | 6 | 2.22 | 15 | 33.30 | |
|  Eng, Randel | | | 2001 | USA | 1.00 | 1 | 0.15 | 15 | 2.25 | |  Van Wely, Loek | g | | 2650 | NED | 1.00 | 1 | 0.89 | 15 | 13.35 | | | Perelshteyn, Eugene | g | | 2542 | USA | 0.50 | 1 | 0.30 | 15 | 4.50 | | | Sevillano, Enrico | m | | 2512 | USA | 1.00 | 1 | 0.77 | 15 | 11.55 | | | Khachiyan, Melikset | g | | 2528 | USA | 0.50 | 1 | 0.28 | 15 | 4.20 | | | Ibragimov, Ildar | g | | 2577 | 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) | | | | CalChess Annual State Championship 2009 | Santa Clara, California | USA | 2009-11-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2348 | 2306 | 4.00 | 6 | 1.31 | 15 | 19.65 | |
| | Schiller, Eric A | f | | 2166 | USA | 1.00 | 1 | 0.31 | 15 | 4.65 | | | Shankland, Samuel | m | | 2486 | USA | 0.50 | 1 | 0.24 | 15 | 3.60 | | | Aigner, Michael | | | 2221 | USA | 1.00 | 1 | 0.38 | 15 | 5.70 | | | De Guzman, Ricardo | m | | 2404 | PHI | 0.50 | 1 | 0.13 | 15 | 1.95 | | | Cunningham, Robin | f | | 2302 | USA | 0.50 | 1 | -0.01 | 15 | -0.15 | | | Kraai, Jesse | g | | 2510 | USA | 0.50 | 1 | 0.26 | 15 | 3.90 | |
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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