Event: Division 1

Opponent Rating Result
Simon K Williams 2515 ½ - ½
Harvey L Duckers 2009 1 - 0
Daniel Shek 1927 1 - 0
Alan K Punnett 2155 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2352 = (8606 + 400 * (2 - 0)) / 4)

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