Event: Division 4 - Athenaeum Cup

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Opponent Rating Result
Robert Porter 126 0 - 1
Peter T Sharpe 122 ½ - ½
Brian Crofts 114 0 - 1
Colin Creighton 100 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-85 = (462 + 400 * (0 - 2)) / 4)

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