Event: Examiner League

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Opponent Rating Result
Andrew Batley 1548 0 - 1
Dave Colledge 1720 0 - 1
Akash Thomas 1658 0 - 1
James Walker 1537 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1416 = (6463 + 400 * (1 - 3)) / 4)

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