Event: James Essinger Trophy - Summer Swiss

Opponent Rating Result
Paul Worledge 1813 0 - 1
John L Clarke 1341 ½ - ½
Christopher Exton 1067 1 - 0
Bob Wallace 1385 ½ - ½
Roy J McAloney 1401 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1321 = (7007 + 400 * (1 - 2)) / 5)

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