Event: St Andrews Club Championship

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Opponent	Rating	Result
John Thackray	1921	0 - 1
Giles Dunn	1665	0 - 1
Michael Pollard	1656	½ - ½
Adam Nilsson	1771	1 - 0(def)
Stephen Crow	1876	0 - 1
Andrew D Bettley	1787
Lester Jones	1528	½ - ½

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

1489 = (8646 + 400 * (0 - 3)) / 5)