Event: Club Championship

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Opponent Rating Result
Arthur W Wells 0 1 - 0
Paul Terry 1746 0 - 1
Robert J Arthurton 1585 0 - 1
Simon Green 1677 0 - 1
Tony Gill 1375 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1197 = (6383 + 400 * (2 - 3)) / 5)

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