Event: Westminster

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Opponent Rating Result
Amey Gupta 1871 1 - 0
Harry Z Zheng 2224 0 - 1
George Zhao 2143 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1946 = (6238 + 400 * (1 - 2)) / 3)

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