Event: Division 2 - Weston Trophy

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Opponent Rating Result
Andrew J Ledger 226 0 - 1
James S Barker 148 1 - 0
Li Jiping 122 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

299 = (496 + 400 * (2 - 1)) / 3)

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