Event: Division 4 - Athenaeum Cup

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Opponent Rating Result
Robbie Merc 99 0 - 1
Colin Creighton 100 0 - 1
Steve Daykin 82 1 - 0
Ralph Batty 36 1 - 0
Jerome Redhead 126 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

9 = (443 + 400 * (2 - 3)) / 5)

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