Event: Division 2

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Opponent Rating Result
Paul E Barks 93 0 - 1
Michael Gallagher 107 1 - 0
Dave R Wingrove 87 ½ - ½
Zoe Moyers 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-28 = (287 + 400 * (1 - 2)) / 4)

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