Event: St Andrews Club Championship

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Opponent Rating Result
Thomas L Hackett 134 0 - 1
Edward Stamp 100 1 - 0
Lester Jones 111 ½ - ½
Michael A Pollard 129 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

19 = (474 + 400 * (1 - 2)) / 4)

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