Event: Durham League Division B

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Opponent	Rating	Result
Graham W Matthews	1580	0 - 1
Robert Donner	1642	½ - ½
Vaughan Davison	1622	½ - ½
Daniel Turnbull	1649	0 - 1
Michael J Creaney	1650	1 - 0
Antriksh Singh	0	½ - ½
Kenneth Boxall	1597	1 - 0
Robert Donner	1642	½ - ½
Vaughan Davison	1622	½ - ½
Chris Swales	1604	0 - 1
Nigel Hall	1975	0 - 1

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

1435 = (16583 + 400 * (2 - 4)) / 11)