Event: Swale 212

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Opponent Rating Result
Tyrone R Jefferies 1605 0 - 1
Ashley Jarvis 1559 0 - 1
Gary R Clifford 1578 0 - 1
Stephen Lamb 1858 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1250 = (6600 + 400 * (0 - 4)) / 4)

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