Event: Division Four

Opponent Rating Result
Chris W Pitt 1640 ½ - ½
Paul Bignall 1481 1 - 0
David H Watkin 1473 ½ - ½
Andrew S Whitten 1732 1 - 0
Chris East 1568 1 - 0
Roger Bray 1555 0 - 1
George Mitchell 1496 0 - 1
Richard Wilkinson 1609 1 - 0
Lee E Collier 1760 ½ - ½
David M Cotterell 1622 ½ - ½
Chris Moore 1521 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1660 = (17457 + 400 * (4 - 2)) / 11)

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