Event: Winchester

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Opponent Rating Result
Phoenix Lavender 0 1 - 0
Louie Yang 1312 0 - 1
Pengxiao Zhu 2166 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1026 = (3478 + 400 * (1 - 2)) / 3)

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