Event: League Division 3

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Opponent Rating Result
James A Sidley 1554 0 - 1
Mark A Herbert 1182 1 - 0
Luis Virgos Matilla 1462 ½ - ½
Pete Sheppard 1243 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1460 = (5441 + 400 * (2 - 1)) / 4)

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