Event: Autumn League

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Opponent Rating Result
David O Vaughan 1843 0 - 1
Matthew J Munden 1500 0 - 1
Ainsley Killey 1585 ½ - ½
Chris Haynes 1750 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1370 = (6678 + 400 * (0 - 3)) / 4)

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