Event: Division 4

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Opponent Rating Result
Richard Oxnard 1596 1 - 0
Ian R Rook 1551 1 - 0
John S Marsh 1718 1 - 0
Richard Oxnard 1584 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1912 = (6449 + 400 * (3 - 0)) / 4)

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Opponent Rating Result
Dennis Hawes 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

400 = (0 + 400 * (1 - 0)) / 1)