Event: Division 1

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Opponent Rating Result
Peter Mellor 1750 ½ - ½
Dave W Leeming 1706 ½ - ½
Tom EC Webb 1629 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1828 = (5085 + 400 * (1 - 0)) / 3)

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