Event: The Chess Centre - Guiseley (Class 2) Junior League

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Opponent	Rating	Result
Arvin Jochum-Critchley	671	1 - 0
Acer Biscoe-Cilenti	453	1 - 0
Jakob Nummela-Price	469	1 - 0
Jakob Nummela-Price	444	½ - ½
Arvin Jochum-Critchley	650	0 - 1
Acer Biscoe-Cilenti	483	1 - 0

performance = (sum(opponents ratings) + 400(wins-losses)) / games

728 = (3170 + 400 * (4 - 1)) / 6)