Event: Winter Tournament (NG)

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Opponent	Rating	Result
Oskar Parker	844	1 - 0
Roman Parker	0	1 - 0
Theo Pringle	1490	0 - 1
Seth Pringle	1272	1 - 0
Ashwin Balkrishna	0	0 - 1
Laith A Harb	1335	0 - 1
Jacinta Khadouri	1510	0 - 1
Gemma Khadouri	1010	0 - 1

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

833 = (7461 + 400 * (3 - 5)) / 8)