Event: Open

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Opponent	Rating	Result
Alan Agnew	2189	0 - 1
Sooraj Raju	2265	0 - 1
Lewis A Turner	2129	0 - 1

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

1794 = (6583 + 400 * (0 - 3)) / 3)