Event: Division Four

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Opponent Rating Result
Joe Kadar 1642 0 - 1
Philip J Jones 1559 ½ - ½
Roger Ball 1454 ½ - ½
John Lunn 1547 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1351 = (6202 + 400 * (0 - 2)) / 4)

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