Event: Division 3

Opponent Rating Result
David Griffiths 1559 1 - 0
Will Eyre 1773 0 - 1
Robert H Willoughby 1624 0 - 1
Grenville Wollerton 1737 1 - 0
Barry T Redburn 1667 ½ - ½
John R Huthwaite 1743 0 - 1
Brian M Hayward 1698 0 - 1
Nigel D Marshall 1513 1 - 0
Brian M Hayward 1698 0 - 1
Marian Talmacel 1600 1 - 0
David Erentz 1699 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1592 = (18311 + 400 * (4 - 6)) / 11)

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