Event: 2nd Cornwalll Autumn Minor

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Opponent	Rating	Result
Stephen Gibson	1493	0 - 1
Colin J Gardiner	1354	0 - 1
Lloyd Russell	1337	0 - 1
Ben Barnett	1285	0 - 1

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

967 = (5469 + 400 * (0 - 4)) / 4)