Event: Division A

Opponent Rating Result
Simon N Rogers 131 0 - 1
Peter Thompson 158 0 - 1
Raymond J Pomeroy 109 1 - 0
Nick Jameson 135 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

133 = (533 + 400 * (2 - 2)) / 4)

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