Event: One East

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Opponent	Rating	Result
Gabriel J Barr	1855	0 - 1
David C Helsby	1810	1 - 0
Michael St J Brown	2005	0 - 1

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

1757 = (5670 + 400 * (1 - 2)) / 3)