Event: League Division 2

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Opponent Rating Result
Peter Rawcliffe 1682 0 - 1
Hugh Thornton 1593 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1638 = (3275 + 400 * (1 - 1)) / 2)

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Opponent Rating Result
Jim R Postill 1410 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1810 = (1410 + 400 * (1 - 0)) / 1)