Event: Division 4

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Opponent Rating Result
Lloyd Beckford 1747 0 - 1
Alex Dunn 1558 0 - 1
Geoffrey D Dring 1585 0 - 1
Harry Duckworth 1509 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1200 = (6399 + 400 * (0 - 4)) / 4)

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