Event: Gordon Nobbs League

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Opponent	Rating	Result
Anthony Tatam	1528	0 - 1
Anthony Tatam	1528	1 - 0
Graham A Mill-Wilson	1494	0 - 1
Paul E Wood	1674	0 - 1
Finlay Langford	1929	0 - 1
Finlay Langford	1929	0 - 1
Michael H Stinton-Brownbridge	1905	0 - 1
Michael H Stinton-Brownbridge	1905	0 - 1

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

1437 = (13892 + 400 * (1 - 7)) / 8)