Event: Holmfirth Junior Rapid

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Opponent Rating Result
Isaac Sykes 657 1 - 0
Leo Hirst 943 0 - 1
Benjamin McBurney 778 ½ - ½
Louis Hillsley 760 0 - 1
Jamie Booth 611 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

670 = (3749 + 400 * (1 - 2)) / 5)

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