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Individual Calculations September 2021 |
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| Zhao, Ian Total change: -24.80 | |   |
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| 2021 Alberta Closed | Calgary | CAN | 2021-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2167 | 2347 | 3.50 | 5 | -0.06 | 20 | -1.20 | |
|  Vasic, Maxim | | | 1947 * | CAN | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Banerjee, Bitan | m | | 2404 | IND | 0.50 | 1 | 0.08 | 20 | 1.60 | | | Gary, Ng | f | | 2214 | CAN | 0.50 | 1 | -0.18 | 20 | -3.60 | | | Dale, Haessel | f | | 2133 | CAN | 1.00 | 1 | 0.23 | 20 | 4.60 | | | Omid, Malek | | | 2135 | CAN | 0.50 | 1 | -0.27 | 20 | -5.40 | | | * 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) | | | | 2021 North American Youth Chess Championships - Open Under 16 | Chicago, Illinois | USA | 2021-08-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2025 | 2332 | 6.50 | 9 | -1.18 | 20 | -23.60 | |
| | Kaplan, Avi Harris | | | 1932 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Singh, Hersh | | | 2052 | USA | 1.00 | 1 | 0.16 | 20 | 3.20 | | | Zhao, Erick | c | | 2121 | USA | 0.00 | 1 | -0.77 | 20 | -15.40 | | | Karthik, Advaith | | | 1953 | USA | 1.00 | 1 | 0.09 | 20 | 1.80 | | | Lu, Jason | | | 2011 | USA | 0.50 | 1 | -0.37 | 20 | -7.40 | | | Johnson, Donald | | | 2063 | USA | 0.00 | 1 | -0.83 | 20 | -16.60 | | | Wen, Teddie | | | 2113 | USA | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Modi, Ethan | | | 1932 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Rusonik, Max | c | | 2047 | CAN | 1.00 | 1 | 0.16 | 20 | 3.20 | | | * 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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