Event: Ramsgate Summer Swiss

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Opponent Rating Result
Frank Usher 1473 0 - 1
Don Richards 1362 0 - 1
Michael Davies 1278 0 - 1
Christopher Exton 1066 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1095 = (5179 + 400 * (1 - 3)) / 4)

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