Event: Division Cup A

Opponent Rating Result
Ed H Goodwin 1836 0 - 1
Stuart Simpson 1500 0 - 1
David Adams 1305 1 - 0
Stuart Simpson 1500 0 - 1
Margarita Nasibova 1527 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1374 = (7668 + 400 * (1 - 3)) / 5)

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