Event: SCCU County Championship: Open

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Opponent	Rating	Result
Mark Davey	2099	½ - ½
Zain Patel	2184	½ - ½
Mike Roberts	2117	1 - 0

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

2267 = (6400 + 400 * (1 - 0)) / 3)