Event: Individual Results Sent For Grading

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Opponent	Rating	Result
Chris W Ford	1606	0 - 1
John W Southcote	1556	0 - 1
Bob Amos	1572	0 - 1

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

1178 = (4734 + 400 * (0 - 3)) / 3)