Event: 400 League

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Opponent Rating Result
John HT Eddershaw 96 0 - 1
David Hill 90 0 - 1
Sean Robinson 105 0 - 1
David J Norris 80 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-307 = (371 + 400 * (0 - 4)) / 4)

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