Event: SCCU County Championship: u1650

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Opponent	Rating	Result
H Trevor Jones	1632	0 - 1
Alan J Sherriff	1620	½ - ½
David J Gilbert	1556	½ - ½

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

1469 = (4808 + 400 * (0 - 1)) / 3)