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Individual Calculations October 2021 |
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| Lemkin, Ben Total change: 3.20 | |   |
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| 2021 IM John Grefe Marathon | Berkeley, California | USA | 2021-08-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1757 | 1614 | 1.50 | 4 | 0.08 | 40 | 3.20 | |
|  Walder, Michael | | | 1953 | USA | 0.00 | 1 | -0.12 | 40 | -4.80 | | | Morgan, Jerry | | | 1480 | USA | 1.00 | 1 | 0.32 | 40 | 12.80 | |  Thornally, Frank | f | | 2010 | USA | 0.50 | 1 | 0.42 | 40 | 16.80 | | | Trestor, David | | | 1583 | USA | 0.00 | 1 | -0.54 | 40 | -21.60 | |
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) | | |
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