Event: SCL Div 4

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Opponent Rating Result
Graham PW Payne 1416 ½ - ½
John Shaddick 1652 ½ - ½
David Green 1187 1 - 0
David Green 1178 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1358 = (5433 + 400 * (1 - 1)) / 4)

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