Event: Division Cup A

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Opponent Rating Result
Roy G Watson 1549 1 - 0
Mike J Johnson 1557 0 - 1
Roy G Watson 1549 0 - 1
Ed H Goodwin 1836 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1423 = (6491 + 400 * (1 - 3)) / 4)

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