Event: Division 1

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Opponent Rating Result
Alex B Combie 1888 0 - 1
Tim D Walker 2101 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1595 = (3989 + 400 * (0 - 2)) / 2)

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Opponent Rating Result
Neil Graham 1810 1 - 0
John R Huthwaite 1765 0 - 1
Chris Budd 1646 1 - 0
John R Huthwaite 1756 ½ - ½
Chris S Cantrill 2031 0 - 1
Richard Myers 1696 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1851 = (10704 + 400 * (3 - 2)) / 6)