Event: Examiner League

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Opponent Rating Result
Rogan O'Reilly 1365 1 - 0
Vivien Webster 1651 0 - 1
Nigel R Hepworth 1687 0 - 1
William Peacock 1613 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1479 = (6316 + 400 * (1 - 2)) / 4)

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