Event: Individual Results Sent For Grading

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Opponent	Rating	Result
Mike J O'Mahony	1724	1 - 0
John Newton	0	1 - 0
Chris W Ford	1606	0 - 1
Chris W Ford	1606	½ - ½
Peter A Bassett	1397	1 - 0
John W Southcote	1556	1 - 0
Peter A Bassett	1389	1 - 0
Bryan E Simm	1284	1 - 0

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

1570 = (10562 + 400 * (6 - 1)) / 8)