Event: Division 2 - Weston Trophy

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Opponent Rating Result
Ken A McIntosh 144 1 - 0
John Baker 146 ½ - ½
James I Davies 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

363 = (290 + 400 * (2 - 0)) / 3)

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