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

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Opponent	Rating	Result
Toby Gregson	811	0 - 1
Henry Sorrell	554	0 - 1
Abraham Dunn	718	0 - 1
Henry Sorrell	713	0 - 1
Louis Lau	1047	0 - 1
Rouslan Belkasemi	661	0 - 1
Kira Kapustina	631	1 - 0
Rouslan Belkasemi	695	½ - ½

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

479 = (5830 + 400 * (1 - 6)) / 8)