Event: Division 4B

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Opponent Rating Result
Brian Crewe 1620 1 - 0
Tim Withers 1739 0 - 1
Joseph T Fearnhead 1396 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1718 = (4755 + 400 * (2 - 1)) / 3)

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