Event: SCL Div 4

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Opponent Rating Result
B White 0 1 - 0
Rob Bird 0 0 - 1
Lewis Jackson 0 0 - 1
Vaughan De Grave 0 ½ - ½
Sammy Rebdi 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-160 = (0 + 400 * (1 - 3)) / 5)

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