Event: Larry Guard League

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Opponent Rating Result
Robin M Perry 68 ½ - ½
Anthony Tatam 98 ½ - ½
Michael Ghillyer 59 0 - 1
Robin M Perry 68 ½ - ½
Michael Ghillyer 59 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

70 = (352 + 400 * (1 - 1)) / 5)

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