Event: Tonbridge

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Opponent Rating Result
Tze Lik Nicholas Chan 0 1 - 0
Dmitry Belousov 82 0 - 1
Aadishesh Devalia 1698 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

460 = (1780 + 400 * (1 - 2)) / 3)

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