Event: Reigate

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Opponent Rating Result
Reece Waters 1064 1 - 0
Leonid Stepanenko 0 0 - 1
Joseph Nebel 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

221 = (1064 + 400 * (1 - 2)) / 3)

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