Event: SCCU County Championship: U1850

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Opponent	Rating	Result
John R McKenna	1697	½ - ½
Lucy Buckley	1578	1 - 0
V Ray Harper	1790	0 - 1
Mike H Wood	1704	1 - 0

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

1792 = (6769 + 400 * (2 - 1)) / 4)