Event: Division 2

Opponent Rating Result
Andrew Cottom 1709 ½ - ½
Alex Kagkalis 1690 0 - 1
Gordon SG Christie 1732 0 - 1
Mike J Johnson 1641 0 - 1
Paul Silverman 1665 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1527 = (8437 + 400 * (1 - 3)) / 5)

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