Event: Larry Guard League

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Opponent Rating Result
Robin M Perry 71 1 - 0
Michael Ghillyer 56 1 - 0
T Klaus Tekniepe 73 0 - 1
Anthony Tatam 92 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

73 = (292 + 400 * (2 - 2)) / 4)

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