Event: Division Five

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Opponent Rating Result
Ray Bettam 1480 ½ - ½
Bob Hackett 1316 0 - 1
Albie Tucker 1067 1 - 0
Bruno A Dos Santos Silva 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

866 = (3863 + 400 * (1 - 2)) / 4)

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