Event: St Andrews Club Championship

Opponent Rating Result
Robin A Edwards 1640 ½ - ½
Stephen Crow 1840 0 - 1
Giles Dunn 1675 1 - 0(def)
John Thackray 1966 ½ - ½
Andrew D Bettley 1799 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1611 = (7245 + 400 * (0 - 2)) / 4)

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