Event: Durham League Division B

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Opponent Rating Result
Roger Anderson 1852 ½ - ½
AD Tony Shires 1586 ½ - ½
AD Tony Shires 1586 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1808 = (5024 + 400 * (1 - 0)) / 3)

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Opponent Rating Result
Deborah Edmundson 1506 1 - 0
AD Tony Shires 1586 1 - 0
Barry Edgar 1616 ½ - ½
Daniel Williams 1605 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1878 = (6313 + 400 * (3 - 0)) / 4)