Event: Division B

Opponent Rating Result
Darren Pickering 1567 ½ - ½
Richard Smith 1450 1 - 0
Charalampos Patsos 1736 0 - 1
Kenny Quinn 1858 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1653 = (6611 + 400 * (1 - 1)) / 4)

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