Event: Pre-Season Swiss

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Opponent	Rating	Result
Alan M Willett	800	1 - 0
Ewan F Corden	1144	0 - 1
Leslie J Fancourt	1595	0 - 1

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

1046 = (3539 + 400 * (1 - 2)) / 3)