Event: Division 2

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Opponent Rating Result
Malcolm P Kingsley 1893 0 - 1
Ian P Morgan 1759 1 - 0
David Harrington 1500 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1584 = (5152 + 400 * (1 - 2)) / 3)

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Opponent Rating Result
John A Duff-Cole 1389 1 - 0
David Harrington 1500 ½ - ½
Ian P Morgan 1751 0 - 1
Oliver Cartwright 1407 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1612 = (6047 + 400 * (2 - 1)) / 4)