Event: Division 3

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Opponent Rating Result
David P Green 116 1 - 0
Robert Lepley 93 ½ - ½
Anthony Taylor 111 1 - 0
Michael MJ Osborn 106 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

307 = (426 + 400 * (2 - 0)) / 4)

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