Event: Haslemere Trophy

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Opponent Rating Result
Colin J Lyne 1713 0 - 1
Neil Crosswell 0 ½ - ½
Colin J Lyne 1713 ½ - ½
Neil Crosswell 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

657 = (3426 + 400 * (0 - 2)) / 4)

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