Event: Open

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Opponent	Rating	Result
Andrew Gilfillan	2004	1 - 0
Ethan Norris	2071	1 - 0
Paul AG Dargan	2045	0 - 1

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

2173 = (6120 + 400 * (2 - 1)) / 3)