Event: SCCU County Championship: u1850

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Opponent	Rating	Result
Tony B Packham	1755	½ - ½
Neil Crosswell	1752	½ - ½
Rezin C Catabay	1795	0 - 1
Davi Diniz Afonso	1746	0 - 1
Andrew JW Dovey	1677	½ - ½
Anthony Garrood	1701	1 - 0

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

1671 = (10426 + 400 * (1 - 2)) / 6)