Event: Div 2 - Weston Trophy

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Opponent Rating Result
John A Clark 1771 ½ - ½
Peter Hulse 1705 1 - 0
Isaac Sargent 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1425 = (3476 + 400 * (2 - 0)) / 3)

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