Event: Examiner League

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Opponent Rating Result
Mark Rojinsky 1465 1 - 0
Dave Gray 1689 1 - 0
Robert Mitchell 1663 0 - 1
Mark Rojinsky 1468 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1771 = (6285 + 400 * (3 - 1)) / 4)

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