Event: St Andrews Summer Tournament

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Opponent Rating Result
Henrik Salbol 1324 0 - 1
David Atkin 1326 1 - 0
Ronald Botham 1112 1 - 0
Dan Malbon 1300 ½ - ½
Jacob Jackson 1455 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1463 = (6517 + 400 * (3 - 1)) / 5)

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