Event: Division 2

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Opponent Rating Result
James Grimston 1600 ½ - ½
Robert Petrovai 1688 ½ - ½
David Ince 1649 ½ - ½
Colin L Ellis 1509 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1612 = (6446 + 400 * (0 - 0)) / 4)

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