Event: Division 2

Opponent Rating Result
Joshua Simpson 1886 0 - 1
Thomas Evans 1632 0 - 1
Mal Waddell 1861 0 - 1
Paul Silverman 1665 1 - 0
Mike J Johnson 1641 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1497 = (8685 + 400 * (1 - 4)) / 5)

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