Event: Margate Rapid-Play

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Opponent Rating Result
Peter McGill 139 0 - 1
Roy J McAloney 77 1 - 0
Ian A Hames 153 0 - 1
Clive J Le Baigue 99 0 - 1
John L Clarke 92 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-128 = (560 + 400 * (1 - 4)) / 5)

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