Event: Club Championship

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Opponent Rating Result
Keith May 1028 1 - 0
Robert J Arthurton 1580 1 - 0
Paul Terry 1747 0 - 1
Tony Gill 1379 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1534 = (5734 + 400 * (2 - 1)) / 4)

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