Event: SCCA Division 2

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Opponent Rating Result
William Gu 1623 0 - 1
Chris Skirrow 1683 0 - 1
Michael E Usher 1713 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1273 = (5019 + 400 * (0 - 3)) / 3)

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