Event: Autumn Online League - Swiss

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Opponent	Rating	Result
Harry McCarney	0	0 - 1
Ian Archbold	0	0 - 1
Anna Pontonutti	0	0 - 1
Colin D Clark	0	0 - 1
David Bradley	0	0 - 1

performance = (sum(opponents ratings) + 400(wins-losses)) / games

-400 = (0 + 400 * (0 - 5)) / 5)