Event: SCCA Division 2

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Opponent Rating Result
Mark Heffer 1698 1 - 0
Derek Chamberlain 0 1 - 0
Sam Kerruish 1400 1 - 0
Amy John 1525 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1556 = (4623 + 400 * (4 - 0)) / 4)

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