Event: SCCU County Championship: u1850

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Opponent	Rating	Result
Pawel Slonczuk	1672	0 - 1
Riya Aude Barbier-Ramaiah	1506	½ - ½

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

1389 = (3178 + 400 * (0 - 1)) / 2)