Event: Durham League Division B

Opponent Rating Result
Daniel Turnbull 1737 0 - 1
Jack Lally 0 ½ - ½
Robert Berry 1581 ½ - ½
Graham W Matthews 1592 ½ - ½
Jack Lally 0 0 - 1
Jack Lally 0 0 - 1
Stephen Rodgers 0 ½ - ½
Chris Clynes 1559 0 - 1
Kenneth Boxall 1583 ½ - ½
Barry Edgar 1616 ½ - ½
Manuel Lopez 1300 1 - 0
Daniel Williams 1605 0 - 1
Stephen Brown 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

875 = (12573 + 400 * (2 - 5)) / 13)

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