Event: North Norfolk Championship (85|10)

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Opponent Rating Result
Edward Hackford 1525 0 - 1
Richie Allen 1464 1 - 0
David P Jones 1473 1 - 0
Edward Hackford 1520 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1696 = (5982 + 400 * (3 - 1)) / 4)

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