Event: Under 100

Opponent Rating Result
Brian W Williamson 1396 ½ - ½
Graham Wilson 1097 1 - 0
Christopher Exton 1112 1 - 0
Roy J McAloney 1401 0 - 1
Christopher Exton 1112 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1384 = (6118 + 400 * (3 - 1)) / 5)

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