Event: Durham League Division B

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Opponent Rating Result
Vaughan Davison 1585 ½ - ½
Oliver Belcher 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

993 = (1585 + 400 * (1 - 0)) / 2)

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Opponent Rating Result
Joe McGinnis 1603 ½ - ½
Kenneth Boxall 1583 1 - 0
Deborah Edmundson 1506 1 - 0
Thomas Finn 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1473 = (4692 + 400 * (3 - 0)) / 4)