Event: Division 4

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Opponent Rating Result
Geoffrey L Bishop 1712 1 - 0
Charles Carr-Jones 0 1 - 0
Mike H Wood 1704 0 - 1
George Cooper 1753 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1492 = (5169 + 400 * (3 - 1)) / 4)

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