Event: Larry Guard League

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Opponent Rating Result
James H Parsons 52 1 - 0
James H Parsons 52 0 - 1
Derek J Scantlebury 87 0 - 1
Scott Gifford 200 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

98 = (391 + 400 * (2 - 2)) / 4)

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