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Individual Calculations May 2011 |
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| Virkud, Apurva Total change: 24.75 | |   |
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| 2nd North American Amateur Open | Skokie, Illinois | USA | 2011-03-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1899 | 1757 | 2.00 | 3 | 1.07 | 25 | 26.75 | |
|  Bian, Alex | | | 1917 | USA | 0.00 | 1 | -0.29 | 25 | -7.25 | | | Villarreal, Brian | | | 1849 | USA | 1.00 | 1 | 0.63 | 25 | 15.75 | |  Britt, Jeff | | | 1930 | USA | 1.00 | 1 | 0.73 | 25 | 18.25 | |
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) | | | | 12th Pittsburgh Open | Pittsburgh, Pennsylvania | USA | 2011-03-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2157 | 1757 | 0.00 | 1 | -0.08 | 25 | -2.00 | |
| | Ramer, Scott L | | | 2157 * | USA | 0.00 | 1 | -0.08 | 25 | -2.00 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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