Event: Max 480

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Opponent Rating Result
Paul Joiner 96 ½ - ½
Pauline Woodward 90 0 - 1
Robert Trevis 67 1 - 0
Pauline Woodward 90 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-14 = (343 + 400 * (1 - 2)) / 4)

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