Event: Division 2

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Opponent	Rating	Result
Adam R Ursell	1876	0 - 1
Paul R Selby	1769	1 - 0
Paul Fisher	1593	1 - 0

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

1879 = (5238 + 400 * (2 - 1)) / 3)