Event: SCL Div 4

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Opponent Rating Result
Nicholas Morris 1473 1 - 0
Robert Sims 1505 ½ - ½
Oliver Williamson 1568 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1515 = (4546 + 400 * (1 - 1)) / 3)

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