Event: SCCU County Championship: Open

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Opponent	Rating	Result
Peter G Farr	2087	0 - 1
Mark Josse	2235	0 - 1
Mark Davey	2099	½ - ½

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

1874 = (6421 + 400 * (0 - 2)) / 3)