Event: Super League

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Opponent Rating Result
Peter Kirby 2064 0 - 1
John Jenkins 2002 0 - 1
Robert Ashworth 1870 0 - 1
Andrew Horton 2461 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1699 = (8397 + 400 * (0 - 4)) / 4)

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