Event: Division 3

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Opponent Rating Result
John Hart 141 1 - 0
Terry WT Lavelle 123 1 - 0
Tomasz D Adamski 121 0 - 1
Michael Milford 108 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

223 = (493 + 400 * (2 - 1)) / 4)

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