Event: Division 2

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Opponent Rating Result
Keith Melling 0 0 - 1
Eric Mansfield 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-400 = (0 + 400 * (0 - 2)) / 2)

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Opponent Rating Result
John Stanton 84 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

84 = (84 + 400 * (0 - 0)) / 1)