Event: Region 20 South London

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Opponent Rating Result
Robert A Akeya-Price 2009 ½ - ½
Suren Grigoryan 0 1 - 0
James Merriman 2145 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1518 = (4154 + 400 * (1 - 0)) / 3)

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