Event: Division 3

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Opponent Rating Result
John Conway 1580 ½ - ½
Stephen Rumsby 1569 0 - 1
Jon A Asbury 1525 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1425 = (4674 + 400 * (0 - 1)) / 3)

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