Event: Division 4

Opponent Rating Result
Michael Moura 1797 0 - 1
Sam Kammin 1815 0 - 1
Peter J Horlock 1685 1 - 0
Jonathan G Young 1607 ½ - ½
Harriet Haslehurst 1664 1 - 0
Scott Leadbetter 1657 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1638 = (10225 + 400 * (2 - 3)) / 6)

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