Event: Margate 100

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Opponent Rating Result
Harry J Sharples 1780 0 - 1
Michael Davies 1278 0 - 1
John L Clarke 1329 1 - 0
Roy F Dawson 1194 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1395 = (5581 + 400 * (2 - 2)) / 4)

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