Event: SCL Div 3

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Opponent Rating Result
Graham Stuart 1764 1 - 0
Ralph Morley 1569 0 - 1
Martin L Newbury 1918 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1750 = (5251 + 400 * (1 - 1)) / 3)

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