Event: Division Two

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Opponent Rating Result
Ian Ellis 1705 1 - 0
Shane Cooksey 1495 0 - 1
David Hulme 1822 0 - 1
David Smith 1777 0 - 1
Geoffrey C Wesson 1667 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1533 = (8466 + 400 * (1 - 3)) / 5)

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