Event: Division 5

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Opponent Rating Result
Kazam Khosravi-Nik 1831 ½ - ½
Joseph E Miller 1445 0 - 1
Ken McGuinness 1574 ½ - ½
Peter J Combellack 1341 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1448 = (6191 + 400 * (0 - 1)) / 4)

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