Event: South Cheshire Shield

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Opponent Rating Result
Martin J Chadwick 1328 0 - 1
Jamie Roberts 1483 1 - 0
Andzejus Galambauskas 1300 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1504 = (4111 + 400 * (2 - 1)) / 3)

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