Event: Spring Blitz Ladder (5|2)

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Opponent Rating Result
Edward Hackford 1554 0 - 1
Michael J Gibbons 1716 0 - 1
Robin Blackwell 1813 0 - 1
David L Jones 1481 0 - 1
Tony R Larner 1563 0 - 1
David L Jones 1481 0 - 1
Tony R Larner 1571 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1311 = (11179 + 400 * (1 - 6)) / 7)

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