Event: Rapid Play League

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Opponent	Rating	Result
M Younis Quereshi	1780	0 - 1
M Younis Quereshi	1780	0 - 1
Howard Brears	1628	½ - ½
Howard Brears	1628	½ - ½
Sam Kerr	0	0 - 1
Sam Kerr	0	0 - 1
Duncan Stables	1712	0 - 1
Duncan Stables	1712	½ - ½
James Wong	1692	1 - 0
James Wong	1692	0 - 1

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

1162 = (13624 + 400 * (1 - 6)) / 10)