Event: Division 2

Opponent Rating Result
John M Guilfoyle 1936 1 - 0
Michael Townsend 1822 0 - 1
Richard P Millener 1715 0 - 1
Mike Levene 1918 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1748 = (7391 + 400 * (1 - 2)) / 4)

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