Event: Division B

Opponent Rating Result
David E Aspinall 140 0 - 1
William J Moffatt 131 ½ - ½
Keith A Wilcox 120 0 - 1
Andrew R De Santos 107 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-76 = (498 + 400 * (0 - 2)) / 4)

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