Event: SCL Div 1

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Opponent Rating Result
Helen Archer-Lock 1672 0 - 1
Philip Tarrant-Edwards 1763 1 - 0
Richard W Ursell 1830 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1755 = (5265 + 400 * (1 - 1)) / 3)

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