Event: Division 3

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Opponent Rating Result
John Lightowler 1685 ½ - ½
John-Paul McDonald 1612 1 - 0
Ian P Blencowe 1535 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1744 = (4832 + 400 * (1 - 0)) / 3)

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