Event: Open Section

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Opponent	Rating	Result
Jon EW Blackburn	1698	0 - 1
Alberto Gissi	1630	0 - 1
Stephen Brown	1494	0(def) - 1

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

1264 = (3328 + 400 * (0 - 2)) / 2)