Event: 400 League

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Opponent Rating Result
Josephine Woollard 105 1 - 0
Chris Allen 80 ½ - ½
Josephine Woollard 105 ½ - ½
Mick Wombell 116 ½ - ½
John HT Eddershaw 95 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

180 = (501 + 400 * (1 - 0)) / 5)

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