Event: Division 2

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Opponent Rating Result
Mike Kenworthy 0 0 - 1
Mike Kenworthy 0 0 - 1
Ken Lawson 1418 1 - 0
Ken Lawson 1418 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

509 = (2836 + 400 * (1 - 3)) / 4)

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