Event: Division 2

Opponent Rating Result
Graham AG Williamson 1748 1 - 0
David CA Colbourne 1776 0 - 1
David snr Stanfield 1652 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1725 = (5176 + 400 * (1 - 1)) / 3)

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