Event: South Cheshire Shield

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Opponent Rating Result
Joe Moxon 1543 0 - 1
Jon EW Blackburn 1661 1 - 0
David J Barker 1487 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1697 = (4691 + 400 * (2 - 1)) / 3)

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