Event: Division Four

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Opponent Rating Result
Ken AJ Francis 116 ½ - ½
Arthur F Kent 122 0 - 1
Leslie Andrews 91 1 - 0
John P Donovan 91 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

205 = (420 + 400 * (2 - 1)) / 4)

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