Event: Super League

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Opponent Rating Result
Michael Ashworth 2215 0 - 1
Peter Kirby 2057 0 - 1
Daniel M Lambourne 1990 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1687 = (6262 + 400 * (0 - 3)) / 3)

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