Event: Swale Championship

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Opponent Rating Result
Keith Nevols 1938 0 - 1
George Hart 1450 0 - 1
Martin Singer 1600 0 - 1
Trefor H Owens 1960 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1437 = (6948 + 400 * (0 - 3)) / 4)

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