Event: Division 2

Opponent Rating Result
Andrew E James 0 1 - 0
Matthew Hammond 1784 0 - 1
Ainsley Killey 1602 1 - 0
Rob E Wilden 1727 0 - 1
Jeffrey Blumsom 1613 0 - 1
Peyton Emson 0 0 - 1
Dave R Wingrove 1348 ½ - ½
John Lightowler 1718 ½ - ½
Peter Nelson 1659 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1183 = (11451 + 400 * (2 - 4)) / 9)

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