Event: Division 3

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Opponent Rating Result
Alexander Horwood 1450 ½ - ½
Faye Ainscow 1610 ½ - ½
Richard J Morgan 1801 0 - 1
Praveen Ravichandran 1623 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1621 = (6484 + 400 * (1 - 1)) / 4)

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