Event: Lowestoft Championship

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Opponent Rating Result
Emmet Clarke 1581 1 - 0
Andrew D Hartland 1870 ½ - ½
Barry Connor 1645 1 - 0
James E Payne 1628 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1781 = (6724 + 400 * (2 - 1)) / 4)

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