Event: Division 1

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Opponent Rating Result
John Y Yee 135 0 - 1
William G Armstrong 144 0 - 1
Alberto Gissi 119 1 - 0
Grenville Cross 107 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

126 = (505 + 400 * (2 - 2)) / 4)

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