Event: Winter Tournament (NG)

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Opponent	Rating	Result
Seth Pringle	1272	1 - 0
Ashwin Balkrishna	0	1 - 0
Jacinta Khadouri	1510	1 - 0
Gemma Khadouri	1010	1 - 0
Gabriele Palmer	1131	1 - 0
Oskar Parker	844	1 - 0
Roman Parker	0	1 - 0
Theo Pringle	1490	½ - ½

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

1257 = (7257 + 400 * (7 - 0)) / 8)