Event: Summer League Division 4

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Opponent Rating Result
Mark Kirkham 1484 1 - 0
Michael Hughes 1753 0 - 1
Peter T Sharpe 1629 0 - 1
Will Winlow 1686 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1438 = (6552 + 400 * (1 - 3)) / 4)

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