Event: Under 110

Opponent Rating Result
Donald Wood 64 1 - 0
Graham Brook 0 1 - 0
Gary Bennett 81 ½ - ½
Gary Bennett 81 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

157 = (226 + 400 * (2 - 1)) / 4)

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