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Individual Calculations March 2011 |
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| De Guzman, Ricardo Total change: 8.90 | |   |
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| 20th Annual North American Open | Las Vegas, Nevada | USA | 2010-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2175 | 2387 | 3.50 | 5 | -0.28 | 10 | -2.80 | |
|  Zhang, Eric | | | 1989 | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | |  Pearson, Michael I | | | 2202 | USA | 0.50 | 1 | -0.24 | 10 | -2.40 | | | Formanek, Edward W | m | | 2233 | USA | 1.00 | 1 | 0.29 | 10 | 2.90 | | | Young, Gregory | | | 2296 | USA | 0.00 | 1 | -0.62 | 10 | -6.20 | | | Weiss, Allen J | | | 2155 | USA | 1.00 | 1 | 0.21 | 10 | 2.10 | |
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) | | | | 2010/11 Bay Area New Year Open | Santa Clara, California | USA | 2010-12-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2089 | 2387 | 2.00 | 2 | 0.30 | 10 | 3.00 | |
| | Loanzon, Arjoe | | | 2101 | USA | 1.00 | 1 | 0.16 | 10 | 1.60 | | | McAkenzie, Dana N | | | 2076 | USA | 1.00 | 1 | 0.14 | 10 | 1.40 | |
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) | | | | 2nd Annual Golden State Open | Concord, California | USA | 2011-01-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2352 | 2386 | 3.00 | 5 | 0.31 | 10 | 3.10 | |
| | Heiserman, Jimmy P | | | 2107 | USA | 1.00 | 1 | 0.16 | 10 | 1.60 | | | Steinfl, Alessandr | | | 2209 | ITA | 1.00 | 1 | 0.27 | 10 | 2.70 | | | Khachiyan, Melikset | g | | 2518 | USA | 0.50 | 1 | 0.18 | 10 | 1.80 | | | Paragua, Mark C | g | | 2521 | PHI | 0.50 | 1 | 0.18 | 10 | 1.80 | | | Bryant, John Daniel | f | | 2403 | USA | 0.00 | 1 | -0.48 | 10 | -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) | | | | 37th Annual Peoples Tournament | Fremont, California | USA | 2011-02-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2208 | 2386 | 2.00 | 2 | 0.56 | 10 | 5.60 | |
| | Tate, Emory A | m | | 2306 | USA | 1.00 | 1 | 0.39 | 10 | 3.90 | | | Perepelitsky, Philipp | | | 2109 | USA | 1.00 | 1 | 0.17 | 10 | 1.70 | |
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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