Event: Summer Max 480 Division

Opponent Rating Result
Pauline Woodward 81 0 - 1
Adrian R Lissamore 106 0 - 1
John P Donovan 87 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-175 = (274 + 400 * (0 - 2)) / 3)

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