Event: Division 1

Opponent Rating Result
Jonathan F Parker 2466 ½ - ½
Marco Gallana 2327 1 - 0
Conor E Murphy 2537 0 - 1
Jonathan W Rowson 0 ½ - ½
Mark S Gray 2253 0 - 1
J Stuart Robertson 2266 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1908 = (11849 + 400 * (1 - 2)) / 6)

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