Event: Lewisham Summer Cup

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Opponent Rating Result
Anthony Foreman 1535 0 - 1
Calogero Tona 1348 1 - 0
David Hamilton 1537 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1607 = (4420 + 400 * (2 - 1)) / 3)

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