Event: A Division

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Opponent Rating Result
Michael P Crowther 1838 1 - 0
Matthew JE Searles 1991 0 - 1
Austin C Elliott 1918 0 - 1
Lee R Bailey 2060 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1752 = (7807 + 400 * (1 - 3)) / 4)

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