Event: The Chess Centre - Guiseley (Class 1) Junior League

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Opponent Rating Result
Rowan McGibbon 713 1 - 0
Toby Gregson 830 0 - 1
Henry Sorrell 761 1 - 0
Louis Lau 1001 0 - 1
Toby Gregson 868 0 - 1
Henry Sorrell 860 0 - 1
Henry Sorrell 871 1 - 0
Henry Sorrell 871 0 - 1
Toby Gregson 943 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

724 = (7718 + 400 * (3 - 6)) / 9)

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