Event: 400 League

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Opponent Rating Result
Josephine Woollard 105 ½ - ½
Josephine Woollard 105 0 - 1
Martin Wilkes 80 1 - 0
Martin Wilkes 80 ½ - ½
Brian D Stephenson 80 0 - 1
Brian D Stephenson 80 ½ - ½
Geoff Facer 110 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

34 = (640 + 400 * (1 - 2)) / 7)

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