Event: Division 2

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Opponent Rating Result
Steven Mason 114 0 - 1
M Bridges 0 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-143 = (114 + 400 * (0 - 1)) / 2)

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Opponent Rating Result
William T Jones 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

400 = (0 + 400 * (1 - 0)) / 1)