Event: South Cheshire Shield

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Opponent Rating Result
Nicholas PA Wright 1437 1 - 0
Roger Coleman 1207 1 - 0
David J Barker 1487 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1777 = (4131 + 400 * (3 - 0)) / 3)

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