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Event: Five Counties Div 2

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Opponent Rating Result
Martin Ayres 1255 1 - 0
Zoe B Knight 985 1 - 0
Peter Smyth 40 1 - 0
Leo Demyan 1111 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1148 = (3391 + 400 * (3 - 0)) / 4)

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