Event: Division 1

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Opponent Rating Result
George Kolbusz 1900 ½ - ½
Daniel Wilkinson 1550 ½ - ½
Kevin K Bennett 1668 ½ - ½
RF (Bob) Collins 1480 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1750 = (6598 + 400 * (1 - 0)) / 4)

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